For decoupage, use a diluted solution of ordinary white glue to seal in the decorative paper you have applied to your object. It dries to a nice, shiny surface.
By Pam from Los Angeles
Variation
Do you have a variation to share for this page?
Mod Podge Substitute
I recently discovered that if you add a little water to plain white craft glue, the same crafts can be made, with the same results, as if you used the more expensive Mod Podge as an adhesive/sealant/gloss.