Portrait en gros plan d'une jeune femme espiègle allongée

A detailed prompt for Gemini Nano Banana Pro to generate a close-up, top-down portrait of a 19-year-old woman lying on her back. The prompt specifies a playful expression (winking, tongue out, smiling), physical features (freckles, blonde hair), attire (white bikini top), and background elements (light blue textured pillow and blanket).