Cut a heart out from each piece of paper. Cut out one large, medium, and small heart.
Place a cup of water, a small paintbrush, and some tissue paper squares in various shades of red and pink onto a tray.
Place the tissue paper in random places on the heart and "paint" over the paper with water.
Make sure you cover all the tissue paper with water. This will give the tissue paper a chance to bleed its colors onto the white paper.
When all three hearts are covered with tissue paper, allow them to dry for a few hours.
When dry, peel off the pieces of tissue paper to reveal a colorful pattern on the hearts.
Attach a length of neutral thread to the back using scotch tape. Attach the hearts in decreasing size starting withe the large heart. Leave a few inches between each heart. Tape a loop of thread to the top and your Tissue Paper Dyed Hearts are ready for hanging.