I think he looks a little "flat" backed. The horses back should come down at the withers and then start back up. It means he may have some back pain issues later in life, but if he is 14 now and not showing any signs I wouldn't worry about it. He has a nice shoulder line, he should have a fairly nice trot and his back side look like he should be able to get under himself well. I think He looks like a nice horse :)
"Until one has loved an animal, part of one's soul remains unawakened..."
- Anatole France