I will be teaching this class at a Work of Heart Studio in San Jose, ca. August 8, 2012 from 6-8 pm. This is a fun surface to work on, you can add lots of layers and these can be translucent, which you really can't see in these photos. The plexi-glass are thick sheets of plastic, not glass. You have to work form the front to the back, usually I work back to front. this makes it fun to work on this surface. The colors become very intense with the light shining through the layers.