Brush techniques

Small corners require precision, control, and the ability to place paint without crossing the surrounding boundary. A thin pointed brush reaches narrow spaces and allows the artist to guide a small amount of poster colour accurately, so option B is correct. A large flat brush is too broad, while a roller and cloth cannot provide the required edge control.

The governing concept is proper care of painting tools. After washing, the bristles should be gently reshaped and the brush allowed to dry in a clean position. This helps preserve the pointed or flat form needed for controlled strokes and prevents deformation, trapped moisture and mould. Option B is correct; paint, pressure and a wet cloth can damage or weaken the bristles.

A dry brush carries only a small amount of relatively thick paint. Because the bristles do not spread a continuous wet film, they leave broken, irregular marks that can suggest hair, wood grain, stone, or other rough surfaces. Thus A is correct. A fully smooth area needs a controlled, adequately loaded brush, while soaking paper is unrelated.

A broad brush carries more water and pigment and has a wider working edge, so it can cover a large area with fewer strokes. This helps create a smoother and more even wash. A very thin brush is better for small details, while a needle and an eraser are not painting brushes. Therefore, option A is the appropriate tool for a large watercolour area.

A thin pointed brush is suitable for small details because its narrow tip produces controlled fine lines, dots, edges, and other delicate marks. The artist can load it with a small amount of diluted pigment and guide the point accurately. A large flat brush is meant for broad areas, while a sponge and cloth do not provide the same precision. Thus, option B is correct.

The governing concept is brush control and care. After rinsing, a tissue or soft cloth can absorb excess water from the brush without damaging its bristles. This helps the artist control the water-to-pigment ratio and prevents accidental puddles or overly diluted marks. Stone, wood, and glass do not safely absorb water from the brush and may damage its shape. Therefore option D is correct.

The governing concept is brush selection according to the size and control of the mark required. A thin pointed brush holds enough colour while its fine tip produces narrow, controlled lines, so option B is correct for delicate tree branches. A broad flat brush is better for washes and large areas, while a sponge and cloth create irregular textures rather than precise lines. Use moderate water and a light hand for clean branches.

The governing concept is that repeated directional marks can imitate natural textures. Short upward strokes resemble separate blades of grass, making option C correct. Varying their height, spacing, direction, and colour strength prevents a mechanical appearance and suggests depth. Large round patches and a flat wash may cover areas or form a background, but they do not show individual blades; horizontal lines alone suggest a different surface direction.

The governing care principle is to remove pigment promptly and protect the brush’s shape. After watercolour work, rinse the brush in clean water, gently remove excess moisture, and reshape its point before storing it. Leaving it in paint or storing it unwashed allows pigment to harden, while keeping it tip-down in water can damage the bristles. Therefore, option A is correct.

The governing concept is matching an art tool to its function. A brush carries water and pigment and releases them onto paper in controlled strokes, washes, or details, so it is the standard tool for applying watercolour. Scissors cut materials, an eraser removes marks, and a palette knife is mainly associated with mixing or applying thicker media rather than ordinary watercolour washes. Therefore, option C is correct.

The governing concept is maintaining clean tools to preserve colour purity. Before beginning, a brush should be clean and free from dried paint, oil, or unwanted pigment. This prevents accidental colour contamination and allows the intended hue to remain clear. Therefore option A is correct. Old paint, oil, or a hardened brush can interfere with water absorption, brush movement, and accurate colour mixing.

The governing concept is matching brush size and shape to the painting task. A broad brush holds and distributes more watercolour, allowing a large surface to be covered with fewer strokes and a more even wash. Therefore option B is correct. A thin pointed brush is designed for fine lines and details, while a wire brush or dry stick is not a suitable tool for applying a smooth watercolour wash.

The governing concept is precision through an appropriate brush tip. A thin pointed brush carries a small amount of paint and ends in a controllable point, making it suitable for narrow lines, edges, dots, and other small details. Thus option C is correct. A broad brush covers larger areas, while a sponge and cloth create broad textures rather than precise watercolour marks.

The governing care principle is that a brush should not be left standing in water for a long period. Constant soaking can soften, spread, or bend the bristles and may also loosen the connection between the bristles and handle. Therefore, option A is correct. The brush does not become new, turn into paper, or make paint brighter. After washing, reshape the tip and store the brush horizontally or with the bristles facing upward.

The governing brush principle is that a pointed round brush provides both a fine tip and a fuller belly. Touching the tip to the paper can make a narrow leaf point, while pressing slightly and lifting can create a wider leaf body in one controlled stroke. Therefore, option A is correct. A wall roller and a very large flat brush are unsuitable for tiny details, and a hard comb is not a standard watercolour brush. Practise pressure changes on scrap paper first.

The governing concept is brush-pressure control. When a brush is pressed strongly, its flexible bristles bend and spread, increasing the contact area with the paper. Consequently, a stroke intended to be narrow may become broader and less precise; vigorous pressure can also disturb a delicate paper surface. Pressure does not clean the brush, thicken the paper, or guarantee a lighter colour. Therefore, option D is correct.

The governing concept is controlled moisture during colour lifting. A clean brush that is only slightly damp can absorb some pigment from the paper without adding a large puddle or spreading the paint unpredictably, so option A is correct. A dirty brush transfers unwanted colour, a completely dry brush lifts unevenly, and oil or sand contaminates the brush and paper. Gentle repeated lifting is safer than vigorous rubbing.

Watercolour brushes are designed with soft, flexible bristles, and their pointed tip is important for controlled lines and details. Hard rubbing against tissue, cloth, or another surface can bend, splay, or break the bristles and permanently spoil the point. The correct method is to press or touch the brush gently against absorbent material. It does not directly darken paint, make paper wavy, or merely colour the water. Thus, option B is correct.

The governing technique is controlled lifting in watercolour. A clean, slightly damp brush can absorb the surplus pigment from the bottom edge without adding a new colour or damaging the paper. Therefore option A is correct. Rubbing may roughen or tear the paper, adding black makes the area darker, and washing the whole region can spread the excess paint and destroy the intended wash. The brush should be damp, not dripping wet.

A broad flat brush is suitable for filling a large area because its wide, even edge covers more surface with each stroke. It can lay down a relatively uniform layer and reduce the number of strokes needed. A very thin brush is intended for lines and details, while a needle and pencil are not paint-filling brushes. Therefore, option D is correct. Brush width should generally match the scale of the area being painted.

A thin pointed brush is best for fine details because its narrow tip produces controlled, precise strokes. It can draw small lines, sharp corners, tiny highlights, and delicate outlines without covering nearby areas. A wide flat brush is better for broad shapes, a fan brush is commonly used for textured effects, and a large round brush holds more paint for larger marks. Thus, option A is correct for detailed acrylic work.

The governing painting principle is controlled brush application. Moving the brush in a consistent direction with fairly even pressure distributes acrylic paint uniformly and reduces unwanted streaks, making option C correct. Changing colour every stroke creates visual inconsistency, scratching wet paint damages the surface, and using unmixed paint can produce uneven pigment and thickness. A suitably consistent paint mixture and overlapping strokes also help produce a smooth flat layer.

The governing concept is texture-making through repeated, irregular marks. A sponge holds and releases acrylic paint in uneven patches, producing the mottled or stippled appearance asked for in the question. A compass and ruler are mainly used for measurement and precise lines, while a needle may scratch or make isolated marks rather than a broad, soft texture. Thus, option D is the suitable tool.

The governing concept is the dry-brush technique. Because the brush contains very little water and paint, its bristles touch only parts of the surface and leave discontinuous, uneven marks. This creates broken, rough strokes that can suggest grass, wood grain, stone, or fur. A transparent wash needs diluted paint, while a smooth layer needs a wetter, fuller brush. Therefore, option A is correct.

The governing concept is suggesting natural foliage through varied, repeated marks. A sponge can stamp clusters of irregular leaf-like spots, while a small brush can add individual leaves, twigs, and directional details. Varying size, spacing, and direction prevents the foliage from looking mechanical. A ruler, scissors, or pencil alone cannot apply acrylic paint to create this texture. Hence, option B is correct.