You can buy these masks relatively cheaply all over the internet but nothing beats that hand made look. Again I work best when I have a goal in mind and something to copy so I set out looking for shots of the Iron Man mask. The picture included on this page gave me the most information about the design and was the key to developing my own mask. I wanted to create something that fitted my own face well but also wanted it to be smooth all over with no obvious joins in the mask, it proved quite tricky for me but now I've worked out the details it should be easier for anyone else wanting to give it a try.
I'm pleased with the results and with hindsight don't think I would have done anything differently
Update - August 2009:
Still lots of interest in this one too, sadly I don't make these because they take too long making them very cost inneffective for you.
People also keep telling me they are having problems with the templates so I've put them on my own site too, here is the link and you'll have to forgive me because the page is very new so don't expect too much from it. http://msraynsford.googlepages.com/home