Most sculpting is based on building over some sort of substatial framework incorporating wire, wood, metal etc....Coat hangers or wire could be bent to shape...possibly a wood model of the SS design, but allowing for the final build up of clay...Thin layers of clay pasted and shaped over the original model...And baked { one thin layer at a time )...,Sand for finish, or simply add thin layers for detail,,,and bake...By working the Sculpty and rolling it out with a rolling pin you can achievr thin laters to work with...You might even use a cheap chinese SS frame for the framework ...rough it up with sandpaper, cover with thin layers of clay and bake...one layer at a time...