Character's Head

Ok, so I have the head almost done and I figured I would post it so I could get some feedback... but I don't think anyone knows I even have this so it's probably pointless.. None the less here it is.

I like the face from the top to about the nose then the mouth I am not really happy about at all. I did some tests and get the expression that the Maquette has but I dont really think there is half as much character in the mouth than the rest of the face. Place your finger over the mouth and look at the character then slowly move your finger down and see where the flow gets messed up for you and let me know.