TUTORIAL. LOTS OF POSSIBILITIES! this one uses metal clay. Create a "negative" using organic materials (this one uses Dill) on sculpey. "Positive" could be done with air dry clay and embossing powders.
use T-pins for solder support - from Big Prongs, Wire Cages: How to Set Little Treasures and Found Objects in Rings and Pendants
Love My Art Jewelry: Tutorial by Carol Dekle-Foss: