12-second vertical 9:16 video, ultra-photorealistic, cinematic, snowy night. Two shots only.

REFERENCES
@image1 — the person: same face, age, skin tone, hairstyle and outfit in every frame, with a warm scarf.
@image2 — the birthday cake: exact design, candles lit.

SHOT 1 (0–8 s) — camera on the sleigh, facing the person, framed waist-up
0–3.5 s: The person rides a wooden sleigh pulled by two reindeer through a snowy pine forest, soft snowfall, golden lanterns along the path, rosy cheeks, joyful smile.
3.5–6 s: The sleigh stops on a quiet hilltop beside a small wooden table with the cake. The air is still. Slow motion: the person leans in and blows one short puff; the candles go out, smoke curls up. They beam.
6–8 s: The person laughs and looks up at the sky.

SHOT 2 (8–12 s) — wide shot of the hilltop
Green and violet northern lights ripple above and form "Happy Birthday" in flowing luminous letters, spelled correctly, fully legible. The sleigh and person stay small on the snowy hill below.

AUDIO
Sleigh bells, crunching snow, a short puff, a laugh. No music or narration.

AVOID
Extra people, changed face, extra or deformed limbs, extra reindeer legs, deformed cake, misspelled text, subtitles, watermark.