take your inside piece of cardstock, and fold it in half, then starting at the folded edge, cut two slits (mine were about an inch long)toward the center of your card.open the cardstock and fold the cut part toward the inside of the card. this is what you will glue your pop up to. glue the whole piece to the main part of your card and decorate and embellish however you like. hope this helps you out. kirstin