Several things make his nose look like an animal not a human. First, the folds on his nose go straight to the rest of his face, blending it in like an animals. Don't forget the things that are right next to the nostrils (I have no clue what they are called but look at the picture. The second thing is the nostrils are huge, make them smaller, look at what I did on the picture again.
Also you forgot to make a line on his chest where the parts of the coat meet.