1. First, cut out a center rectangle from your card. Cut a piece of the acetate larger than this rectangle and adhere it with tape on the inside of the card underneath the “window”.
2. Now around the cut area, on the inside of the card, adhere 3-D tape completly around the cut out window. Place your filling inside of this area onto the transparency. Now cut a piece of blue cardstock slightly smaller than the card. Remove the paper backing of the foam tape and adhere the blue cardstock onto it, closing it off completly. Cover this blue paper then with white paper to conceal it if necessary.
3. Now, adhere your choice of sticker 3-D stickers onto the front of the card.