So, I edited away everything but the face:

When I finally got the tone to match the rest of the suit, I pasted this onto it as a transparency... and they say MS Paint is useless!
Toyed around with a new masking project where I wanted to use a face-pasting after the fact, so I took the original face, and removed it while making a different background color:

That way I could drag that over any other face setup and make a new face-mask:


A handy thing if you happen to have templates for superhero type masks handy...