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!
Inspiration for nature themed Salt Dough Ornaments! Take a twig of evergreen from outside and make an impression into the salt dough, make a hole for a ribbon, and then bake!- I love this look, trying to think of other things I could create with this