Cut out the shapes with a biscuit cutter, or two differently-size round cutters, or a small round cutter and a straw. You get the idea!
Bake your batches of cookies one sheet at a time for 10-12 minutes, rotating the cookie sheet 180 degrees, halfway through baking. This ensures that all the cookies turn the same color instead of getting browner in the hotter parts of your oven.
Let cookie sheets cool before putting new cookies to be baked on them.