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Cut two pieces of contact paper, peel the backing off of one, and set it down in front of you, sticky-side-up. Cut or tear colorful tissue paper into small pieces. Place the tissue paper pieces on top of the sticky side of the contact paper. Peel the backing off of the second piece of contact paper, and place it on top. Cut your shape out. Punch a hole into the top of your suncatcher, then thread some string through it. Tie the ends of the string together to form a loop, then hang your suncatcher in a bright window. Finished.
Make sure that both pieces of contact paper are the same size. You will be sticking them together in the end to seal your suncatcher. The pieces don't all have to be the exact same size and shape, but they should all be around 1 inch (2.54 centimeters). Don't worry about making a specific shape just yet; focus instead on the size and the design. You can overlap the pieces, if you want to, but try not to leave any gaps. Run your hands across the contact paper to smooth out any air bubbles and to seal the design in. You can draw your shape first, if you want to. Don't worry if the tissue paper extends past your design; the goal is to completely fill your design with color. You can also use fishing line, yarn, or ribbon. Keep your suncatcher indoors and don't let it get wet, or it will fall apart.