Siaoster

decals can practically be sticked on anything, but of cos it depends on the quality of the stickers. if the adhesive surface of the decal is weak, it wont last long no matter where u stick it

as far as i know, art friends do not custom cut stickers eh.....someone correct me if i am wrong

wet areas are ok to be stick with decals, provided during the sticking process, that specific area is dry.

Maybe you guys can try : www.urbanwerkz.blogspot.com he is doing custom glass etchings (but not sandlasting)...maybe he can give you some advices and help you guys out