grayscale image of a sunflower mural with the highest possible contrast, representing a bas relief model for CNC routing to be carved in wood. The composition features a single large sunflower centered in the frame, occupying 60% of the image, surrounded by 3-4 smaller sunflowers and leaves. The image must feature extremely balanced lighting with very clear, sharp contours and textures, including intricate seed patterns in the flower centers and detailed vein structures on the leaves. Include at least 4 distinct depth levels to create a pronounced 3D effect. The relief itself should be made of organic shapes as though moulded from clay, with flowing lines reminiscent of Art Nouveau style. Incorporate a subtle, textured background suggestive of a field. Design with no undercuts and a minimum feature size of 2.5mm for CNC routing feasibility. Voir plus