genart.dev

Painting & Illustration

Painting skills — medium behavior, value structure, atmospheric depth

Painting & Illustration Skills

Painting skills teach AI agents how traditional media behave and how to simulate authentic artistic techniques in generative art. Load these via the load_skill tool.

Available skills

painting-foundations

Core painting principles that apply across all media:

  • Value structure — organize compositions into 3-5 value groups before adding color
  • Color temperature — warm light / cool shadow (or vice versa) for dimensional form
  • Composition — large shapes first, supporting shapes second, detail last
  • Medium choice — match the medium to the desired visual quality
  • Layer sequencing — plan the build-up order before starting
load_skill({ skill: "painting-foundations" })

watercolor-techniques

Simulate watercolor behavior in generative art:

  • Wet-on-wet — soft diffused edges, color bleeding, organic shapes
  • Wet-on-dry — crisp edges, controlled washes, layered glazes
  • Glazing — transparent overlays for optical color mixing
  • Granulation — pigment settling into paper texture for natural grain
  • Tool sequencing — large wash first, medium shapes, then fine detail with dry brush
load_skill({ skill: "watercolor-techniques" })

ink-illustration

Line-based illustration techniques:

  • Line weight hierarchy — thicker lines for foreground, thinner for distance
  • Hatching for value — parallel lines, cross-hatching, contour hatching
  • Brush vs. nib marks — expressive brush strokes vs. precise pen lines
  • Negative space — define form through what is left white
  • Ink wash — diluted ink for tonal values and atmosphere
load_skill({ skill: "ink-illustration" })

mark-making

Control the character of individual marks:

  • Gestural energy — fast, loose marks for movement and life
  • Calligraphic line — varying pressure for thick-thin transitions
  • Stippling — dots for value and texture
  • Hatching — parallel lines for directional shading
  • Scumbling — irregular overlapping marks for texture
load_skill({ skill: "mark-making" })

material-behavior

Understand how physical media simulate in digital:

  • Watercolor — transparency, bleeding, granulation, drying edges
  • Charcoal — soft gradients, smudging, erasing to white, grittiness
  • Ink — flow control, feathering, drying characteristics
  • Oil — thickness, blendability, impasto texture, drying time
  • Pastel — dustiness, layering, blending with fingers
load_skill({ skill: "material-behavior" })

value-structure

Organize tonal values for readable compositions:

  • 3-value study — dark, mid, light — the simplest readable composition
  • 5-value range — add quarter-tones for more nuanced modeling
  • Value hierarchy — strongest contrast at the focal point
  • Value compression — reduce value range for atmosphere and distance
  • Notan — Japanese dark-light design for balanced compositions
load_skill({ skill: "value-structure" })

atmospheric-depth

Create convincing depth through atmospheric effects:

  • Value compression — distant objects converge toward middle values
  • Temperature shift — warm foreground, cool background (aerial perspective)
  • Edge softness — sharp edges in foreground, soft edges in distance
  • Detail reduction — less detail and texture with increasing distance
  • Scale diminution — consistent size reduction with depth
load_skill({ skill: "atmospheric-depth" })