HI, I have been creating mosaics for several years now. I however have never mosiaced a window and would like some knowledge before I do. Can I mosaic a bathroom window that is in the door? This door is inside a shop and work area. If I put a frame around it after I am done will it stay put. What glue should I use and any other things I should know? Anyone who can give me advise would be so appreciated! This will be a change for me as I have mosaiced everything else possible. Thanks so much!!!!