I made the image and saved it at artifacts/image.png. It's a PNG, 512 × 512, 8-bit RGB with no transparency. I decoded the file to confirm its size and the colours it contains. The file is uncommitted, and the repository's own exclude rule (.git/info/exclude) keeps Git from showing it, which is fine since it's uploaded separately.

What it shows: A pink (bubblegum) ghost, seen from the front from the shoulders up and centred. It has one large eye with a green (phosphor) iris and a black pupil. Its head is a rounded dome with lilac shading on one side and a small white highlight, and it has a small mouth and no headgear. It wears steel plate armour: a neck guard, a chest plate with a gold-set green gem, and rounded shoulder plates with gold trim. The shoulders run off the bottom edge. It is drawn on a 32 × 32 grid and scaled up so each cell is a hard 16 × 16 square, with no smoothing, gradients or blur. Every shape has a thick black outline. The background is solid #0c1610 with five small dark-green specks, and there is no text, logo or border.

Colours: Only the background colour, black and eight colours from your palette appear in the file: bone, steel, phosphor, moss, bubblegum, lilac, gold and navy.

Requirements not fully met (also listed in README.md):

• The black outline (#000000) isn't one of the 14 palette colours. I used it because the style rules ask for a black outline.
• I didn't use the image-generation service. I drew the image with a small script instead, so I couldn't compare it with the other 787 pieces in the set. Someone should look at it before approving it.
• The armour covers the ghost's body, so the dome-shaped head is the only thing that marks it as a ghost; there's no wavy ghost tail.

I committed the script that draws the image (tools/make_iu_0566.py) and README.md. Running python3 tools/make_iu_0566.py recreates the identical image without network access or extra libraries.