We used a polymer clay based on this recipe. It is a less toxic version of fimo that air dries hard and paintable. I adjusted the recipe as follows: Polymer Clay 1 large bottle of white glue (7oz or roughly 3/4C) 1 C cornstarch 2 TBS mineral oil juice of 1 lemon
homemade chalk paint recipe - Best tip I learned form a professional furniture painter is PATIENCE. Several coats of paint and let it dry for at least 24 hrs between coats.