I made artifacts/image.png: a 512 × 512 PNG of a bone-coloured frog wearing a bandana and a jacket. I opened it to look at it, and decoded it to confirm the size and the colours it uses.

• What it shows: a front-facing frog, centred, with:
  • big bulging eyes in phosphor green
  • a brick-red bandana with bone dots, knotted on the right
  • a navy jacket with cobalt lapels over a gold shirt
  • shoulders that reach the bottom edge
• Style: I drew it on a 32 × 32 grid and scaled it up 16× with hard edges, so there is no blur, anti-aliasing or gradient. Every shape has a black outline one grid cell thick. The background is solid #0c1610 with five small moss-green specks. There is no text, frame or border.
• Colours: it uses 11 colours: black for outlines, the background colour, and bone, steel, phosphor, moss, navy, cobalt, brick, gold and bubblegum (the cheeks) from your palette.

Requirements I couldn't fully meet or check:

• Outline colour: the black (#000000) is not in your listed palette. I used it because the brief asks for black outlines separately.
• Jacket edge: the jacket's outline stops at the bottom edge of the image, because the shoulders run off it.
• Fit with the set: I had no other pieces from the 787-piece collection, so I couldn't check that it matches them.

The image is generated by tools/draw_iu0556.py, which uses only standard Python. I committed it with a README.md. Both files describe the result and list the requirements above. artifacts/result.json records the size, format, colours and these gaps. Neither artifact file is tracked by Git, so they go up with the separate upload.