Pottery glazes are complex mixtures that fuse to pottery when placed in a kiln at high temperatures. Glazes are responsible for decorating the pottery, creating an attractive glossy surface, and makes the dishware pottery food safe. While three coats of glaze will give you a nice solid color, you can experiment with one or two coats for some nice shading; it is not too hard to learn, and results will improve with practice. This is a fun way to create personal artworks.