First make the homemade clay. In a large saucepan combine 1 cup of cornstarch and one 1-pound box baking soda. Then stir in 1 1/2 cups of water.
Cook and stir over low heat till mixture thickens and forms a ball. Remove from heat. Turn clay out onto a surface dusted lightly with cornstarch.
STEP 2
When cool enough to handle, knead the clay till smooth.
Cover clay; cool completely. Use to make footprints. If desired, tightly wrap clay and refrigerate up to 2 weeks. When ready to use, knead to soften.
STEP 3
Tape a piece of waxed paper to your work surface. Pat some of the homemade clay into an oval just a little larger than your foot.
STEP 4
To make a footprint, gently step into the clay with a bare foot. For a larger footprint, have an adult step in the clay.
To dry, place footprints on a baking sheet. Let dry completely. Bake in a 300 degree oven for 30 minutes.
STEP 5
Turn off oven; leave baking sheet in oven 1 more hour. If clay still isn't dry, place the on wire rack to air-dry. Air-drying the clay without an oven will take several days. Thin pieces, such as christmas ornaments, will dry overnight.