First choose and image you want to show through your window. I used from our Bigfoot & Pickle Face rubber stamp collection our fish bowl and one of our fun fish images. I rubber stamped both images onto card stock with our child safe/washable ink stamp pad and then I colored in the fish.
I used the exacto knife to cut and "x" in the fish tank and then used sharp scissors to cut out the tank itself. Cut on the inside of the stamped image so you still have the outline of the tank on your card stock.
Cut a piece of Acetate or sheet protector [Acetate is thicker and can be found in the scrapbook section of your local craft store] the same size as your card stock. Turn your "fish tank" onto the back side and glue the clear sheet to it. Then take strips of foam tape and go around your image leaving no spaces, otherwise if you do leave a space your beads will fall through. Depending on the size of your beads, if they are thicker then the foam tape, put another layer of foam tape on top of your existing foam tape [hope this makes sense!]. Your beads will get stuck on the window if your foam tape is not thick enough. Place some beads on top of the clear plastic window~do not use too many as you don't want to cover up your image. Remember, a little bit goes a long way.
Peel of the tape on your foam tape and then stick the "back on" or card stock that has the image you want to show through your window. You have most of your shaker card done!