Minecraft wiki entry for Pixel_art, associated text: When building advanced pixel art from real life that contains anything other than squares and rectangles, you must know how to build shapes that may be difficult to make in Minecraft. These include circles, triangles, spheres, and more. If new to building shapes, start off by breaking 3-dimensional shapes down into 2-dimensional, and combining the 2-dimensional back together. To learn more about how to build shapes, see Tutorials/Creating shapes.