Draw 12 baggy steampunk jumper variants as separate 1024x1024 RGBA PNG layers for a generative PFP collection. Match the base character's painterly style, line weight and palette exactly: worn dark leather and wool, aged brass gears and rivets, teal accents. Character is FRONT-FACING and symmetric about x=512.

Corrected geometry: skull spans y=432..848, x=288..735 including side gears. The jaw/chin bottom is at y848, chin x=440..590, and the jaw sides are at x360 and x665 between y=740 and y=848. Eyes are at y632.

Placement: the garment clothes the shoulders and chest across x=0..1024 down to the bottom edge y=1024.

Neckline: a bulky rolled or ribbed neck opening centered at x=512, top edge at y~850, tucked just under the chin. It must never overlap skull pixels, so keep everything inside the jaw outline (x=360..665 above y=850) fully transparent.

Coverage: the base already wears a leather coat whose collar points rise to y755 at x=215..330 and x=690..805, and whose shoulders reach the canvas edges from y890. Each jumper must be fully opaque over that entire coat silhouette, x=0..1024 and y=755..1024 excluding the jaw area, so no coat, lapel or brass neck collar shows through. Use a high bulky collar or cowl to cover the lapel points.

Variety: 6 baggy knit jumpers (cable knit, patched wool, brass-buttoned henley-style placket, gear-pattern intarsia, oil-stained work sweater, ribbed turtleneck). Add 4 baggy hoodies with the hood DOWN, draped behind the neck and on the shoulders below y=850. Add 2 rare oversized jumpers with brass clockwork chest plates.

Only garment pixels; everything else fully transparent. 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, rarer items lower. 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.