You are crazy! If hotglue is soft enough to shape, its too hot to touch with your bare skin. I wouldn't mess with it in bulk without leather gloves on, and I'd be using silicone rubber cake decorating tools to shape it.
If you want something safe to hand mold, either use Polymorph plastic pellets which can be melted in hot water at a relatively safe 60 deg C or use Sugru or Milliput epoxy putty.
Alternatively, treat yourself to a 3Doodler hand held 3D printing pen!