Roll out fondant on a table sprayed with cooking spray and dusted with 50% powdered sugar and 50% corn starch. Shift the fondant often so it does not stick to the table. Do not turn fondant over after beginning to roll it out. Roll fondant out to approximately 1/4" thickness. Using a pattern and a pizza cutter or a sharp knife, cut out the desired shape. Center pattern press over fondant. Firmly roll pizza roller over pattern press to imprint design. Place on rolled fondant or Buttercream cake. May leave as is or decorate.