A charming illustration of a girl with Dahlia, designed with organic, flowing shapes, inspired by Jon Klassen's distinct style. Utilize a desaturated, light, and airy pastel color scheme, perfect for nursery art. The artwork should be set against a clean white background, capturing the essence of whimsical and calming children's book illustrations. Emphasize the gentle and soothing tone of the image, making it ideal for a peaceful nursery setting, --ar 9:16