Disaster struck this project. after detecting what seemed to be some type of mold I decided not to cover it with plastic on top of the wet towel. the result... the wet towel dried out a whole lot faster which end in disaster.
see for youself:
I'm afraid this will be the end of iron man, or at least in this form. BUT, I recently bought a styrofoam head, which will be the next starting point for this. it think I'll start from a plaster base now. So that at least the proportions are correct from the start.