How to make a perfect flexible Cold Porcelain Clay

In this video you can learn how to make a perfect homemade cold porcelain clay. A high quality and very smooth clay and also flexible after drying.
Ingredients:
Corn starch 1cup
PVA glue. 1cup
Glycerin. Up to 1/3 cup
Depends on how much you
Want to be flexible but 3 tbs
Is good
Vaseline
Hand lotion