Hello! Yes you can. In "Part 2" of this demonstration, I proceed to use water-based clay to continue to sculpt the form. ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-4yk7BKPZXX8.html Be sure to watch Part 3 when I then use plaster to add to the surface of the form. Best!