Draw 12 steampunk upper-body garment variants (baggy jumpers, hoodies worn with hood down, baggy open shirts) as separate 1024x1024 RGBA PNG layers that stack ON TOP of the attached base character. Match the base's painterly style, line weight and palette exactly: worn leather, wool and canvas in charcoal, teal, rust and oxblood, trimmed with brass gears, rivets, buckles, pipes and gauges.

Facing: FRONT, symmetrical shoulders (the eyes glance to viewer's right but the skull and body are square to camera). Placement (absolute pixels): the skull spans x=290..735, y=430..848, chin bottom at y848 for x=440..590; the jaw sides end at y760 around x=330 and x=690. The base already wears a high-collared leather greatcoat whose lapels reach y755 at x=215..805, shoulders slope from y880 at x=180/845 down to the edges, at y~960 at x=0/1024.

Each garment MUST fully cover every coat pixel: neckline rises to y~760 beside the jaw (x=330..690), dips under the chin to y>=855 at center x=512, shoulders reach the canvas edges x=0 and x=1024, and the garment runs to the bottom edge y=1024. Draw nothing above y=750 and nothing inside the skull/jaw silhouette.

Hoodies: draw the hood down, bunched around the neck and shoulders below y=760, never behind or over the skull.

Open shirts: fill the opening with a garment-owned undershirt, vest or waistcoat in the same layer so the base coat never shows through. Only garment pixels, everything else fully transparent, with clean anti-aliased edges and no shadows cast outside the garment.

Suggested mix: 4 jumpers, 4 hoodies, 4 open shirts. Write artifacts/jumper_01.png .. artifacts/jumper_12.png and artifacts/jumper.json: an array of {"file","name","weight"} with integer weights summing to 100. Plain variants get higher weights, ornate brass-heavy variants get lower weights (about 3-5).

Write artifacts/jumper_01.png .. artifacts/jumper_12.png and artifacts/jumper.json: an array of {"file","name","weight"} with weights summing to 100, rarer lower.