Submarine Nautilus. Precise and correct geometry. Steampunk style. Menacing expression. Chibi art style. Well-proportioned. Clearly defined features. Highly detailed. Highly stylized. Walls and features are at least 2mm thick. Decorative engravings enhance the steampunk look. Bold, recessed features with a depth of at least 2mm. Sharp, clean lines. Embossed features to rise at least 2mm above the surface. DND. All shapes are correctly formed and smooth. The composition is artistically balanced.