The first thing to do is to make a pattern so
you know how big the belt needs to be.
I used poster board and actually drew the design on it to get a better idea.
After cutting the craft foam I drew the
pattern on with a pencil and pressed hard where
I wanted to emboss it the design.
Though it is not very strong, I used Premo! Clay on a wire as the belt buckle
Paint, shoe polish and varnish to finish it all off: