There was a person I was talking to here on a list but can not find the name, I am hoping I can find her thru here....
There are still a few openings at the Enamel on Glass with Dan Adams and Cynthia Toops. He showed this technique at ISGB.
Contact Arrowmont School of Arts and Crafts Gatlinburg, TN
http://www.arrowmont.org/workshops-at-arrowmont/Page-2