Create a high-resolution, anime-style illustration of a young woman from head to waist. She has long brown hair tied in a smooth ponytail and bright blue eyes. She is wearing a white sleeveless t-shirt. The setting is a serene park with moss green trees, bushes, and a trail in the background. The woman is standing, and her expression is cheerful. Include atmospheric effects, reflections, and shadows to enhance the scene. Ensure the composition is well-balanced and the overall scene is vibrant and colorful, reflecting a sunny day in the park.