Painting on wax resist with a brush. CAREFULLY! If you make a mistake, the only way to get it off is to bisque it again (to burn it off).
Also applied wax to the bottom (the "foot") to make it easier to clean glaze off the bottom. I think it comes off easily enough with a wet sponge anyway, but it's standard practice at Waterworks, and it's kind of fun to paint it on, so I do it anyway.