There are a few things you need in order to flip a picture on a pic collage. First, you will need some pictures. Second, you will need someissors. Third, you will need a picture hanger or wire rack. Fourth, you will need some adhesive or heat-up adhesive. Fifth, you will need some paper towels or other cloths to clean the picture before flipping it. Sixth, you will need a lighted candle or lighter to show the picture when it is flipped over. Seventh, once the picture is flipped over, you can use your fingers or another object to make sure that the image is correctly oriented so that it looks like it has been cut out from the bottom of the photo!