Skeletor Views WIP

I'm quite fond of using super sculpey myself, If you don't mind me asking what tools did you use or is this all by hand? because i notice when iim sculpting i leave a variety of finger prints left behined. that and is it one solid piece or did you make it hollow with tin Foil? ive noticed its easier to bake it when its insides are foil but that also makes it a little bit more fragile. GREAT work by the way, the best ive ever seen done with sculpey.