Re: the facial hair...I agree, a little out of keeping with the style, but since it's the costume we're commenting on, it's irrelevant to the issue.
Love the look...very intimidating, not someone you'd mess with. costume is great, and particularly love what you've done with the sculpted chest piece. It's very "Batman", but since it's supposed to be made out of bullet-resistant material, it has that hard look. The only drawback I can see is the flexibility. I have to ask, is the chest piece "hard" or flexible (like tough latex)?
The Skull is terrific. keep it the way it is. I don't think you need to paint the teeth onto it at all, the "belt" serves that purpose. It's like the "Mike Zeck" Punisher costume, where the teeth were part of the belt. Not certain what purpose they served, but I can assume it was ordnance or ordnance containers of some kind. Looks good.
The only problem I can envisage, is the long teeth on the belt riding up into the midriff. I guess Zeck could get away with drawing it in the comics, but practically, I think you've found the threshold at which the boundaries of comic book art will not cross into our reality.
One last thing...the trenchcoat...spot-on! I've got to know, where in heaven's name did you manage to get hold of it. It's identical to Tom O'Brien's Trench-coat that Tim uses in his cover art. I've been after one like it for years.
Not to "take-away" from your efforts as "The Punisher", the costume's first-rate, but the "look" is more "Terminator" than Castle.
By the way....you'll need guns....lots and lots of guns
