All in all not a good picture to critique from. Only thing I am going to say from this picture is that the front fetlocks have me concerned. The left more so then the right, but they are both enlarged.
He broke his left front pasturn twice. Once at the end of his 2 yr old year and again as a 5 yr old. He is sound for light riding now. He is weak behind right now because he hasn't been in a lot of work for the last 3 years. Just recently he has been getting ridden on a regular basis, before he was trail ridden maybe once to twice a month.
I really like the coupling over the top of his rump. He is light boned behind and has small feet.. I am thinking he has very thin hoof walls and his hindfeet angles are low so I wonder how soound his feet are. I wish his withers carried a bit further into his back and he did not have as much dip behing them. His neck seems to be set on a bit high but his shoulder carries nicely back and is a good angle.
His front legs.. well you said it.. he broke one leg twice and the other is thickened probably from having taken over the work.
With his front leg history I would be training him in dressage. Is that your intent?
He is surprisingly sound. Winter time is a bit harder on him as his ankle stiffens up a bit, he is actually just a trail horse, he occasionally gets ridden, mostly he just eats carrots and gets brushed and bathed. I am trying to find him a home where he can get more use but nobody wants a horse with his history. Oh well he will just stay here till the perfect home is found!