The model stumbles when asked to invent procedural geometry it has rarely tokenized because LLMs predict tokens, not precise coordinate math. For reliable output define acceptance criteria up front and require a strict format such as an SVG path with absolute coordinates and explicit cubic Bezier control points, plus a tiny rendering test that checks a couple of landmark pixels.

Break the job into microtasks, ask for one petal as a pair of cubic Beziers with explicit numeric control points, render that snippet locally with a simple rasterizer, then iterate on the numbers. If determinism matters accept the tradeoff of writing a small generator using a geometry library like Cairo or a bezier solver so you get reproducible coordinates instead of watching the model flounder for an hour.