He is a 7 year old purebred Tennessee Walking Horse. Our trainer says he doesn't look like a normal Tennessee Walking Horse (but he has a gorgeous gait); and back 5 years ago my riding instructor at the time said the same thing and that his head was too big and he looked like he was malnourished as a foal (which recently I found out that that was true). I think he has grown into his head now though but still I would greatly appreciate different opinions on his conformation.
Sorry, the first 2 pictures are dusty. I don't have any better ones.