Start with a clean surface. Scuff sanding the tumbler is recommended for best adhesion. CrystaLac Glitter Glue can be applied directly to the surface or over a primer coat. Squeeze out a line of glue and spread it evenly over the entire surface using a soft bristled brush. Wetting the brush first will help the glue spread easily. Next apply glitter to the wet glue. After 1 hour, press down glitter to make it as flat and smooth as possible. If needed, a second application can be applied using the same process. Dry Time: Wait 2 hours between coats.