I've made the image and saved it at artifacts/image.png. It's a 512 × 512 PNG, drawn on a 32 × 32 grid and scaled up 16× with hard square pixels.

What it shows: a front-facing ghost bust, centred, with its shoulders reaching the bottom edge.

• The head is a swamp-green (#7cc84a) dome with a small tip on top, shaded in moss on its right side.
• It has big bone-white eyes with black pupils and phosphor-green glints, pink cheeks and a small "o" mouth.
• It wears an open cobalt jacket with navy lapels, steel buttons and sleeve seams. The green body shows through the opening.
• There's no headgear. The background is solid #0c1610 with four tiny moss-green specks, and there's no text, frame or border.

Checks: I read the file back with a small PNG parser of my own and looked at the rendered image.

• It is a valid PNG, 512 × 512, 8-bit RGB.
• Every 16 × 16 block is one solid colour, so there's no anti-aliasing, gradient or blur.
• It uses 10 colours: eight from the allowed palette, plus black for the outlines and the background colour.
• After the first render I fixed a misaligned outline, pupils that looked like "C" shapes, and a chin that looked more alien than ghost.

I couldn't confirm the format with ffprobe, because it isn't installed here.

Not fully met:

• The navy lapels meet the cobalt jacket with a change of colour, not a black line. Every other shape has a black outline, one grid pixel wide (16 px in the final image).
• I couldn't check how well it matches the rest of the 787-piece collection, because I had no reference images from the set.

Files: I committed the drawing script (tools/draw_iu_0027.py, standard-library Python, re-runs give the same image) and a README.md recording the size, format and gaps above. The image itself is untracked as required; the repo's local exclude file already ignores artifacts/.