What a cutie! If I stuck that neck on my yearling, their builds would be almost identical. My colt is a giraffe right now, though.
Overall, very nice. He's growing nicely, maybe a little over at the knee but he could grow out of that. His should might be a bit steep but not too bad. I love love love his neck and head. What size halter does he wear? My boy has a petite head and is still wearing weanling halters.