Style: richly detailed painterly steampunk matching the attached skeleton's rendering, line weight and warm top-left light. Materials come from the item (wool, tweed, leather, canvas, brass, copper, teal glass), never bone.

Facing: front, straight on at eye level, centred on x=512. Garment is WORN by the base skeleton. The collar ring sits at y≈790..830 and wraps around the cervical vertebrae.

The neck goes DOWN INTO the opening.

NECK HOLE: leave fully transparent from the jaw (y=755) down to the front edge of the collar, roughly x=440..584. Its front edge is about y≈820 for round or roll collars and may dip to y≈860 at x=512 for V/lapel fronts, where a shirt or cravat fills the V below the hole. Never draw the inside, lining or back wall of the collar.

Never fill the neck hole. The front of the collar may overlap the lower vertebrae and should be wide enough (x≈400..625) to tuck in the side processes.

Body: opaque from the collar down to the bottom edge y=1024. The shoulder line slopes from y≈800 at the collar to y≈860 at x=0 and x=1024. It spans the full width x=0..1024 so the clavicles (y≈870..950), the shoulder joints (x≈10..140 and 880..1015) and the ribcage are completely hidden.

Nothing above y≈785 except the collar's rear rim at the sides.

Variants, all clearly different in shape, material and colour: 01 brown high-collared waistcoat with brass buttons over a shirt; 02 burgundy leather coat with wide lapels and copper rivets; 03 bottle-green wool turtleneck rolled around the neck; 04 navy tweed jacket with a mustard cravat; 05 charcoal canvas work shirt with leather braces and brass clips; 06 mustard high-collared waistcoat with a teal-glass watch chain; 07 brown leather greatcoat with a high turned-up collar and buckles; 08 burgundy roll-neck jumper with a copper zip at the shoulder; 09 charcoal tweed jacket with a burgundy cravat and teal-glass pin; 10 navy canvas shirt with braces and a rolled neckerchief; 11 bottle-green velvet-look waistcoat with a double row of brass buttons; 12 rare black leather coat with brass gauge-and-gear epaulettes and teal glass lenses.

Outputs: artifacts/jumper_01.png .. artifacts/jumper_12.png, plus artifacts/jumper.json as an array of {"file","name","weight"} with integer weights summing to 100, rarer items lower (12 lowest, about 3). 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.