Ok, if I may,let me do a bit of critique on this one, because I believe that with very small adjustments it could be right on. From what I can see, if you have his nose curve in from the bridge then back out a bit to the bulb/tip, that might capture it. Also, his facial outline curves more as well, like an hour glass. Also, the overall width of his nose at the nostrils should probably be somewhat less wide.
What you have, and I mean this as a compliment, would be a great default cyberface replacement!
Sorry, the pic is b&w, but it the best large sample I could find as to what I mean.....