Generate a high-resolution, photorealistic image of a serene female yoga instructor, approximately 30-40 years old, with a calm expression, dressed in simple, breathable yoga attire (e.g., plain, earth-toned leggings and a fitted top). She is centered in a perfect full lotus meditation pose (Padmasana) on a round, natural fiber meditation cushion. Her eyes are gently closed, and her hands rest gracefully on her knees in Gyan Mudra. The setting is a meticulously raked gravel zen garden, featuring smooth, rounded stones. In the immediate foreground, a small, tranquil water feature contains several delicate pink and white lotus flowers in full bloom. Behind her, slender, vibrant green bamboo stalks form an elegant, natural screen. The scene is illuminated by soft, diffused morning light, creating a peaceful and harmonious atmosphere. The camera perspective is a medium, eye-level shot, emphasizing both the instructor's tranquility and the detailed beauty of the zen garden.