Jeez...
Pro, just to clarify, a slightly long muzzle is just that - a slightly long muzzle! It has nothing to do with your dog having a "Deer head", she simply has a slightly faulted muzzle. No dog is perfect.
That, IMO, should not be the deciding factor on whether breeding her would contribute something of value to the breed. I have not seen your dog, I know very little about her besides the way her head looks, and I am not in any position to tell you that she -isn't- worthy of breeding. That's your decision to make, just be sure you make the responsible one.
I find it disappointing, however, that conformation to AKC's standard seems to take the main priority in breeding.