背景をクリスマス仕様に🎅

Do NOT modify the subject’s face, skin, makeup, lighting, body, or dress. Keep the original iPhone look exactly as it is — same brightness on the skin, same shadows, same highlights, same texture. Only add a realistic Christmas hotel-lobby background behind the subject, matching the exact lighting and perspective of the original image. The Christmas tree must look natural, not studio-like: warm glowing lights, soft reflections, subtle sparkle, and real depth. Blend the background seamlessly without brightening the subject or redrawing anything. Add ONLY these stylistic elements, without altering the face or lighting: • very light film grain • very subtle haze on highlights • tiny dust particles • minimal motion-blur ONLY where it already exists Do NOT change skin tone, facial features, brightness, or contrast. Do NOT redraw or regenerate any part of the subject.