Yes.
She uses clay and glaze to model sea life.
No, "clay glaze" does not need to be capitalized unless it is at the beginning of a sentence or part of a title.
. Both: Bisque fire, glaze, Glost fire
If it is earth clay, probably nothing. If you are talking about Play Dough, nothing. If the clay has been fired and has glaze on it, some glazes are toxic.
You should put glaze on polymer clay after baking and cooling it completely. The glaze adds a shiny or matte finish to your polymer clay creations and helps protect them from wear and tear. Apply the glaze using a soft brush or sponge in thin, even coats for best results.
Glaze.
No, you can not.
Yes, but if you want to glaze the clay you have to fire it at a low before you glaze it so it is hard - ish.
It is called a glaze.
No, the paint that you see on clay is either glaze or stain. Glaze is like liquid sand, and when it heats up it turns into a glassy surface. Stain is not shiny, and can be painted on with great detail.
Porcelain clay
Clay is pretty waterproof already, but to make it truly so, dry it and bake a glaze on it inside and out.