Run the glue stick twice across the back of the design to be glued down. If the purple color fades during application, more glue is needed. Immediately press it into place on sheet metal. Allow it to dry for at least 10 minutes and then cut away.
Immerse the pieces in warm water. After several minutes the glued down paper patterns will easily slide off the metal, if not just float off.
Clean, rinse, and dry the metal pieces and you are ready to go.