Character: front-facing steampunk skeleton skull, centred on x=512, crown at y=172, cranium about 410-430px wide between y=300 and y=420 (brass temple plates at x≈300 and x≈725, y≈310-400), eye sockets centred at y=455 with tops at y≈405.

Style: match the base exactly. Use realistic, richly detailed rendering with aged brass, copper, dark leather, felt and teal glass, rivets, small gears and brass trim, soft frontal light from above, fine texture and no cartoon outlines.

Draw 12 distinct hats, front view, worn on the skull: 3 top hats (gear band, copper trim, teal goggle lens on band), 3 bowlers (brass band, riveted rim, small cog cluster), 3 riveted brass and copper helmets (domed plates, rivet rows, teal porthole or vent), 3 leather aviator caps (brass buckles and rivets, teal-lens goggles pushed up onto the cap, never over the sockets).

Placement: the hat's opening wraps the cranium, about 400-440px wide at its lower edge, centred on x=512. The lowest pixel must fall between y=250 and y=400: top hats and bowlers about y=260-330, helmets and aviator caps up to y=400. It must never cover the eye sockets (top at y≈405).

Brims may extend from x≈180 to x≈844. Crowns of tall hats may rise as high as y≈0 but must not be clipped. A hat sitting above y=202 at its lowest point is floating and wrong.

Aviator ear flaps may hang down the sides of the cranium only outside x=300..724 and above y=560. Shade the inner brim edge so the hat reads as seated on the skull.

Outputs: artifacts/hat_01.png .. artifacts/hat_12.png, plus artifacts/hat.json, an array of {"file","name","weight"} with weights summing to 100. Plain variants weigh 10-12, ornate or glowing teal variants 4-6. Write artifacts/hat_01.png .. artifacts/hat_12.png and artifacts/hat.json: an array of {"file","name","weight"} with weights summing to 100, rarer lower.