Bold cartoon style, thick black outlines, flat bright colours with one hard shadow tone, glossy highlights, playful underwater palette. a pearl necklace, a shark-tooth necklace, a chunky gold chain, a shell pendant The base character's pose: facing straight at the viewer, both eyes level and looking at the viewer, head centred left to right; framed head and shoulders: the top of the head near y=210, the neck meeting the shoulders near y=740, both shoulders and the upper chest in the picture and running off the bottom edge; the arms are down and out of view, nothing in front of the chest; extra detail from the creator: looking straight at the viewer with a confident, laid-back expression; draw every item in that pose and perspective.

Anatomy of this character to respect: The head is a tall narrow egg shape tapering to a pointed crown, so hats must be narrower at the top or sit low around the dome. Fin-shaped ears stick out from both sides at eye level (about x 295-355 and 668-728, y 455-590), so glasses arms and headwear brims must go behind or around them; big drawn lips already sit on the base.

Draw 16 neck variants as separate 1024x1024 RGBA PNG layers for a generative PFP collection, matching the attached base character's rendering style, lighting and line weight exactly. Colours and materials come from the request and the item itself (felt, leather, brass, wool, glass, fabric), NOT from the base character's skin or bone: an item must never look made of the character's own surface.

Make the 16 variants clearly different from each other in shape, material and colour, covering the full range the request names.

Placement: WORN AROUND THE BASE'S NECK, over whatever clothing it wears: chains, necklaces, pendants, bandanas, bow ties and the like WRAP THE NECK: the item's two upper ends meet the neck's own left and right outlines at x=378 and x=648, y=780 (where the neck meets the shoulders), and pass behind the neck there, so it clearly circles the neck; it never starts out on the shoulders or flat on the chest.

From there it hangs down onto the upper chest, within x=276..748 and y=681..1024. A chain or necklace follows the neck and shoulders and drapes with weight; the part behind the neck is not drawn, and nothing crosses the face or chin. Only the item; no clothing, no skin, no collar, nothing else.

This layer is painted IN FRONT of the character, so never draw anything that should be behind it (the back of a hood, the back of a chain, the back of a hat brim behind the head): it would show in front. Only the neck pixels; everything else fully transparent. Write artifacts/neck_01.png .. neck_16.png and artifacts/neck.json: an array of {"file","name","weight"} with weights summing to 100, rarer lower.