To the OP:

I hesitate to state the obvious...

You can do this yourself! Have you looked at the morph dials on the character's face? Heck, I can't model at all but was able to use the morph dials to sculpt a pretty average looking guy (who just happens to look like me as a young man.)  At least I don't think he looks "perfect," cause God knows no one ever thought I was a dreamboat when I was young!!

Quite often I start with a purchased character that is "close" to what I want, and then drag out the plastic surgery dials.