Birthday Number Balloon Portrait

[Purpose]
Convert the user's attached child photo into a Korean birthday studio portrait card featuring a giant foil-balloon number, hand-lettered English name typography, and small Korean date subtitle. Soft pastel studio mood, reusable every year by changing the number.

[Scene]
The child from the attached photo is the photographic subject. Preserve the original face, eye shape, hair, skin tone, and natural body proportions EXACTLY. The child sits on the floor, leaning gently or looking toward the balloons, in a relaxed candid pose.

Composition (3:4 vertical portrait):
- Background: a soft off-white wall ({wall_tone}) with hand-painted small {accent_color} stars and tiny confetti dots scattered loosely, watercolor-marker style.
- Top zone (~25% of height): the child's English name "{child_name_en}" hand-lettered in {name_color} marker-pen calligraphy, large bold strokes spanning the full width of the upper area.
- Below the name (~5% of height): a small soft rectangular sticker label containing the Korean text "{birthday_ordinal_ko} {birthday_date}" in clean sans-serif (about 18-20pt).
- Left side (about 40% of width, middle-to-lower zone): a giant {balloon_color} metallic foil-balloon shaped as the digit "{birthday_number_digit}", with visible weight strings and small reflective highlights. The balloon stands on the studio floor.
- Right side (about 60% of width, lower-middle zone): the child from the source photo, naturally placed sitting or kneeling on the studio floor. The child should be wearing the outfit from the source photo (preserved). Add a small handdrawn party hat ({balloon_color} with a small bow at the top) on top of the child's head.
- Foreground bottom: a small cluster of mixed balloons in {balloon_color} + cream + soft beige, plus a cupcake-shaped balloon. Confetti scattered across the floor in tiny dots.

[Style]
Korean studio kids photoshoot aesthetic — soft natural lighting, pastel airy tones, candid moment feel.
Camera: medium full-body or seated portrait, slightly above eye level.
Lighting: soft diffused natural daylight, no harsh shadows, gentle highlights on the balloon.
Color grade: pastel + warm white, low saturation, dreamy mood.
Subject: photographic (real child from photo). Background stars, confetti, and name typography: hand-drawn marker/watercolor style.

[Text]
- Name headline "{child_name_en}" — hand-lettered marker-pen calligraphy, {name_color}, large bold.
- Subtitle "{birthday_ordinal_ko} {birthday_date}" — clean Korean sans-serif inside a soft sticker label, smaller.

[Aspect]
3:4 vertical portrait (1024x1366), full bleed.

[🚫 IMPORTANT]
- Preserve the child's face, eye shape, skin tone, and body proportions EXACTLY from the source photo
- Korean subtitle text must be precise
- English name must be precise
- The number balloon shape must clearly read as the digit {birthday_number_digit}
- Only the child is photographic — typography, stars, confetti, balloons are illustrated/composited