This is my third year that I've played with autumn leaves like this. Every year I try slightly different methods to see what I get. I think I picked up the idea from one of the critique sites that I visit. It doesn't take a whole lot of preparation. I just gather some leaves, spread them on cookie sheets, fill the cookie sheet with water, carefully place the cookie sheets in the freezer and let them sit overnight. The next day, or the next time I have the chance, I just pop them out of the freezer and shoot away. These are leaves from our gorgeous Japanese Cherry tree.