Minecraft wiki entry for Pixel_art, associated text: Sea lanterns are arguably one of the easiest blocks to make with pixel art. Therefore, they're a great block to start off with. Simply make the outer edges of each face with cyan wool or concrete. Then, add cyan wool/concrete in the corners of what you just made. For the rest of the next layer inward, use light blue wool/concrete. Once again, add light blue wool/concrete in the corners of what you just made. Finally, fill in the middle of it with white wool/concrete. You are done.