Paper products need to be sealed before you apply epoxy over them as the epoxy could ruin the paper. For paper-based items, we recommend sealing the paper with craft glue. Alternatively, a mixture of Elmer's glue and water works well and is more cost-effective. Mix 3 parts Elmer’s glue and 1 part water and paint the mixture over the paper products. Allow this seal coat to dry thoroughly before applying the epoxy.