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A four-panel, 2x2 square layout step-by-step drawing tutorial for a simple cartoon duck, clean instructional illustration style: - Panel 1 (top-left): A simple grayscale oval sketch representing the duck's body on a white background. - Panel 2 (top-right): The grayscale body oval with a smaller grayscale circle overlapping the front to form the head. - Panel 3 (bottom-left): The grayscale duck outline with an added beak on the head and two webbed feet attached to the bottom. - Panel 4 (bottom-right): The completed cartoon duck in full vibrant color, featuring two expressive eyes on the head and a clean wing outline on the body.