Lighting Effect - xl/pony

Create a portrait of a young girl sitting by a large window in a cozy room. She is reading a book, and the natural light from the window illuminates her face and the pages of the book. The light should be soft and diffused, creating a gentle, almost ethereal glow. The room should have warm, inviting decor, such as a plush armchair, a wooden coffee table, and a few potted plants. The background should be slightly out of focus to draw attention to the girl's face and the book.