I made artifacts/image.png: a 512 × 512 PNG of a bubblegum bunny with big eyes, no headgear, and a cobalt hoodie. I looked at the rendered image once and it matches the brief. Nobody else has reviewed it.

• How it's drawn: a script draws it pixel by pixel on a 32 × 32 grid, then scales it up 16× with nearest neighbour. Every pixel is a hard-edged square, with no smoothing, gradients or blur.
• Character: one bunny, facing front and centered. Skin is #ea8bb6, the eyes are 4 × 6 grid cells each, and the hoodie runs off the bottom edge, with the hood down around the neck, white drawstrings and a pocket seam.
• Outline and background: every shape has a black outline one grid cell thick (16 px). The background is solid #0c1610 with five small green specks.
• Colours: 10 in total. Besides the background and black, they are all from the allowed list: bone, bubblegum, lilac, cobalt, navy, brick, moss and phosphor.
• Text: there is no text, logo, frame or border.

I don't know of any requirement it misses. The only open question is whether it fits the look of the other 787 pieces, which I can't check here.

I committed the drawing script (tools/draw_iu0575.py) and a README.md describing the result. Git had no author identity set, so I passed your name and email (hafuya, oumouhabyb@gmail.com) on that one commit without changing the Git config. The image itself is not committed; the repository's exclude file already ignores artifacts/, so it stays out of Git for the daemon to upload.