Keep the facial features of the person in the uploaded photo exactly as they are, and build the portrait around them.

Subject: a woman standing in front of a wall on which a big number, "[your age]", is cast by a projector. The beam lights up the digits and part of her body, leaving deep shadows and strong, dramatic contrast.
Wardrobe and styling: an oversized white shirt slipping off one shoulder, fashionable slim narrow sunglasses, hair pulled up in a tidy bun. She holds a glass of wine.
Mood: a refined birthday celebration, minimalist look, high contrast, a light film grain.
Camera: seen in profile.
Style: artistic black-and-white photograph, editorial fashion photography.