My daughter and I are trying to make some necklaces for her friends. We are having 2 problems that are occurring. 1. after we glue the picture inside the bottle cap.. we wait about 10 minutes to let glue set then pour resin on top... after several hours of the resin starting to dry the pictures start to lift up.. 2. we are having problems with the colors bleeding.. espicially if there is white involved... the colors seem to dull! How long does it normally take for resin to set? Please help! Thanks so much! Mom and Katie!