Hair: The girl should have hair colored in a soft aqua green

Hair: The girl should have hair colored in a soft aqua green (#7FDBFF). Use simple geometric shapes to represent the hair, like a rounded shape or a series of smooth curves. Headphones: Include large, simple over-ear headphones. The headphones should be a contrasting color to the hair, such as a neutral shade like gray (#BDC3C7) or a matching pastel tone. Use geometric shapes like circles and rectangles for the headphones. Facial Expression: The girl should have a neutral, relaxed expression. Draw basic facial features such as two small dots for eyes and a simple curved line for the mouth. Design Style: Use clean lines and geometric shapes (circles, ovals, and rectangles) to construct the face and headphones. Avoid any shadows, gradients, or intricate details. The illustration should maintain a flat and minimalist style. The background should be a solid, soft color that complements the hair and headphones, like a light pastel or neutral shade. Additional Details: Ensure the lines and shapes are smooth and consistent to keep the flat design aesthetic. The illustration should be simple and focused, emphasizing the girl's face and headphones without additional elements.