Place the flattened modeling clay onto one sheet of cardboard, then press the second sheet of cardboard on top of the clay.
You can easily see how this works with a piece of modeling clay, a nail with a wide head, and a nail with a small head.
Preheat your oven to 275 degrees. Peel the modeling clay paw imprint away from the cardboard and bake on an ungreased cookie sheet for 15 minutes.
