Well update, what I used to make a mask was simple. First I drew my predator design, than I started cutting out pieces of cardboard, tapin it togather, get sun glasses for the eyes. Than after after that I covered it up with tin foil, after that I made some home made clay, Covered the whole mask interior with clay, detailed the mask with markings, scars, burns, than painted it metalic grey, with black spots in the cuts and scars, and mixed it a bit. It wasnt the smoothest mask, but it works.