Shading is one of the most useful tools an artist can employ. It can turn a flat two-dimensional drawing into a three-dimensional one. Done correctly, it can give the illusion of light falling on a subject as well as the illusion of depth, shape, and structure. A correctly proportioned drawing without shading will look dull and lifeless.
But know this: Shading isn’t just about creating shadows. It’s also about noting where light hits surfaces, getting those mid-tones down, and establishing a realistic or atmospheric effect. A well-shaded piece can have the power to inspire emotion.
Light and shadow can be complex to work with, but there are a few things to keep in mind.
In order to shade, you have to know how light interacts with a given object.
Light Source – Can you tell where the light is coming from and what kind of light it is? One light source will have definitive highlight and shadow, two or more light sources have convoluted shadow. Practice with observing the real thing.
Highlights and Reflected Light. A highlight is an area that is directly lighted by the light source. Reflected light is the light reflected from other surfaces to the subject that can lighten the shadows. The addition of reflected light makes the illustration more realistic.
Core Shadows and Cast Shadows. The core shadow is the darkest part of the object, away from the light source. A cast shadow is a shadow that falls on another surface. Understanding both types of shadows are needed for depth and space.
Shading Tips and Tricks
A variety of shading methods can be used to create texture and value.
Hatching- This is a way to shade by creating parallel lines, and the amount of shading depends on the number of the lines.
Cross-Hatching. This technique involves layers of intersecting lines that are used to darken shadows and add texture. Different line directions create depth and dimension.
Stippling. Unlike hatching, stippling involves creating shaded areas with dots rather than lines. Varying densities of dots can be used to create a range of shading values, and distances between dots can be used to achieve lighter values. Stippling is often a good tool for suggesting complex textures.
BLENDING — produces a smooth transition from one tone to another. The tortillon, tissue, or finger is used to blend. Blending produces soft, subtle gradations of tone and value that are especially useful for skin, clothes, and other smooth textures.
Contour Shading Curved lines that follow the shape of the object, used to suggest volume and a three dimensional form. Use on rounded or irregular shapes.
Methods for adding texture to your drawings:
Texture helps us understand the surface characteristics of an object, helping to achieve a sense of realism and to create visual appeal. Various materials can be simulated in a variety of ways.
Rough Textures
Employ broken, hatching and cross-hatching or stipple to represent rough textures such as rocks, tree bark or clothing. Aim to create an irregular and rough tactile effect.
Smooth Textures: Smooth out the colors for glass, skin, and metallic textures. A little gradient, and some soft blending go a long way.
Patterned Textures. When drawing repeating textures (e.g. tiles, scales, fur) pay attention to the frequency and pattern of the textures. Too much uniformity can result in a mechanical appearance, so try to introduce some variation into the pattern.
Shading can be mixed with textures to create even more realistic, detailed images.
A good drawing must achieve a balance between shading (which describes the form of an object) and texture (which describes the surface of an object). The way the light falls on an object describes its shape, while the way the object reflects the light describes its surface. Notice the way light behaves on various objects and textures in the world around you in order to accurately depict them in your drawings.
Additional Shading and Texture Advice
Practice Observational Drawing : Draw from life or from good reference photos that show lighting conditions, shadows, and texture. Observational drawing will help you with your realistic shading.
Playing around with different pencils and tools is another way to create different textures. Try using a range of pencils from very hard (H) to very soft (B), try using charcoal, pens or blending stumps to create a range of tonal values and textures in your drawings.
Gradual layering: Build up your shading values. Shade from light to dark to maintain control. It is easy to over shade.
Edge Control Is Key Edges are either sharp (object) or soft (atmosphere, transition). Edges help to create depth and volume.
Common Problems and Resolutions
Flat Drawings
To eliminate flatness, use a variety of tonal values, and make sure there are highlights and shadows. Contour shading can also contribute to a sense of volume.
Shading That’s Too Dark
Add shadows gradually and study how light behaves. Excessive shading can make the drawing appear two-dimensional and mask important features.
Inconsistent Texture
Look at the surface. Do little studies to copy the texture, using different directions, densities, and patterns of strokes.