create template by wrapping stiff material round the glass & trim to size. Building it over the original glass helps to hold the structure. Baby powder instead of non-stick liquid to help the clay slide off. Add a bottom!
Vintage Lace & Doilies: Upcycled and Repurposed - this could be done with polymer clay, air bake clay, or of course stone ware and porcelain would be great! If you are actually firing these, glaze would look so cool Clay for Kids