Mermaid Seashell Milestone Flatlay Custom Day Count Name Portrait

[Input]
Use the user's attached baby photo as the base. PRESERVE the child's identity: face proportions, eye shape, chubby cheeks, skin tone. The child stays recognizably the same person. Realistic photographic tone, NOT illustration, NOT cartoon.

[Scene — TOP-DOWN mermaid seashore flatlay milestone]
The camera looks straight DOWN from directly above (flat-lay), the baby lying on her back on a smooth white fabric backdrop, looking up toward the camera. Soft even daylight, dreamy and clean.

The baby wears a {tail_description}: a fitted shimmering mermaid tail covering the legs, ending in a soft tulle fin that fans out at the bottom, paired with a matching frilled halter top. The outfit is FITTED so the full face and front hair stay clearly visible, nothing covering the eyes.

On her head, {crown_description}, sitting like a delicate headband so the forehead and hairline stay visible.

Beside the baby, to one side of the frame, a LARGE decorative number "{day_count}" sculpted entirely from real seashells, starfish, and pearls arranged in the shape of the digits, resting on the white fabric.

Scattered naturally and asymmetrically around the white backdrop: small starfish, spiral conch shells, scallop shells, and loose pearls, like treasures washed up on a beach.

[Text]
The only text is the number "{day_count}", and it is formed by the physical seashells (not printed type). Render the digits clearly and correctly. If a name is provided, place "{baby_name}" in small elegant hand-lettering on the white fabric near the tail fin; if {baby_name} is empty, do NOT render any name and keep the space clean.

[Prominence]
Baby is the PRIMARY SUBJECT, her head and face about 18-22% of the canvas height, positioned slightly off-center so the seashell number balances the composition. NOTHING covers the face. Face fully readable.

[Style]
Premium dreamy storybook flatlay photography: soft pearly highlights, gentle golden warmth on the shells, fine detail in the sequins and tulle, clean white background, painterly yet photographic.

[Aspect]
3:4 vertical portrait, 1024 x 1366. Center the lying baby and the seashell number in the frame.

[IMPORTANT]
- Preserve the child's face, eye shape, skin tone, and natural baby proportions EXACTLY from the source photo.
- True top-down flat-lay angle, baby lying on her back on white fabric.
- The seashell number "{day_count}" must read clearly and be built from actual shells, starfish, and pearls.
- Mermaid tail fitted and shimmering; tulle fin fanning at the bottom; head crown does not cover the face.
- Shells and pearls scattered naturally and asymmetrically, not left-right mirrored.
- Natural baby anatomy, 5 fingers per hand.
- NO Instagram UI, NO captions, NO watermarks, NO studio names.