Prompt craft: using Opus 5.5 with JS Canvas to draw a Chinese seal-script seal

dotey · x · 2026-10-06

@dotey shares the full prompt used to have Claude Opus 5.5 design a Chinese seal-script (篆书) seal: draw the traditional characters 「宝玉」 stroke-by-stroke in JS + Canvas (no font files), in both white-on-red and red-on-white versions, with cinnabar ink texture, carved-edge roughness, and rice-paper background, exported as a 1200×1200 transparent PNG.
Key prompt techniques: make the model decompose each character's components and plan the seal layout before drawing; then have it screenshot-check legibility and stroke spacing and iterate on issues.

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