Colleen Schaan is a regional instructor for Copic. I saw her video about making stained glass bottles with Copic ink. I did not have a glass bottle so I decided to use the mixed-media film that we used in a Copic workshop I attended this past January. My local Michael's and Joann's craft stores did not have a gold leaf pen but they did have silver leaf pen so what I ended up with looks like a stained glass window.