Lovely horse! He's not squared up in this photo so it's tough to judge his conformation for you. He looks fine to me except his back legs and haunch, but I think much of it is due to the way he's standing. If you want someone to judge his frame under saddle and picture of him being ridden would be helpful. :)
Add: Sorry, started writing this before you posted your riding pic.
You look like you're on the right track. Your hands look a little flat. Just turn your wrists so your thumbs are on top. The horse's frame looks okay, but he is a little low on the head set, heavy on the forehand and his nose is behind the vertical. I think you would benefit from some work over poles and lateral exercises to get him off the forehand and working from behind a bit and try not to ride him so low and crank his nose back too hard. The ideal frame is poll level with the horse's top line and the face on a vertical line. Riding behind the vertical is just as much of a no-no as a nose that sticks out in front. If you can get him off the forehand a little, he should start reaching a bit more and lengthen his stride better too. Keep working at it! You're almost there!
Last edited by kiltsrhott; 02-03-2014 at 10:30 AM.