Minecraft wiki entry for Glazed_terracotta_patterns, associated text: To start off, place one block of terracotta on its own, and pay attention to the corner designs. When putting together patterns, the corners take center stage, with different combinations of corner textures being the main factor in what is aesthetically pleasing. If you see a corner part you like, place more blocks as the player spins around that corner, revealing the design that comes out when they are put together.