you'll need to start off with a pendant in the shape of a frame. mine is an old one from a charity shop. Â£2
take out whatever was in it before; in this case, a flimsy card disk with floral pattern.
fill up the big gap with clay. if using air dry clay like me, leave it in there and it won't need glueing. If not, remove it and bake. Don't bake the pendant! XD
when this is done, paint black, unless, of course, the clay was originally black. I guess that black is traditional, but go for crazy coluor if you really want!
now you'll need a motif, this one is a teddy bear button, with the back taken off so it lies flat
glue it on, done!