Value structure in practice

Arrange broad light and dark shapes, then preserve their relationships as you add rendering and texture.

What it is

You arrange the main light and dark shapes on the page before rendering details. This includes deciding how the shapes relate and how much contrast each area receives.

Begin with rough, blocky tones. Squint at the subject, place broad light and shadow masses, and check the image at a small size or from a distance. Confirm that the pose, depth, and focus read before adding gradations and edges.

As you render, keep wrinkles, reflected light, and texture within the value limits set by the block-in or thumbnail. Compare the rendering with that early plan and correct highlights or shadows that disrupt the main groups.

Why it matters

A strong value structure helps shapes remain readable, separates forms from the background, and supports depth and focus. Weak control can flatten faces, merge forms, or make details compete. A maintained structure keeps the main light and dark pattern visible as the image develops and at a small size.

You can check it when

• ✓Stop at the block-in stage and check whether the pose, depth, and main shapes read clearly.
• ✓Compare a thumbnail with the final image and verify that the main light and dark pattern remains similar.
• ✓Add fine detail, then check that shadows have not become lighter than the lit midtones and lights have not become darker than planned.
• ✓View finished drawings at a small size and verify that the main value groups remain easy to identify.

Sub-skills

• Organizing values before rendering
• Reading clearly at thumbnail size
• Maintaining value structure while adding detail

Related skills

• Value grouping (simplifying to 2–5 major value groups)
• Separating the light family from the shadow family
• Value hierarchy and focal-point control
• Positive-negative space and notan
• Thumbnailing (multiple variations, simplification, reading at thumbnail scale)
• Controlled finish — knowing where not to render
• Plane analysis and turning form with value