As the others said:
- saddle too far forward, its interfering with his shoulder
- stirrups too short (unless you are about to do some major high jumping and need the extra knee room, but even then, a tad short), and it looks like you are slipping out of the iron
- his head/neck is funny, but by the curve of the reins looks like maybe he was going after a fly? Or just bending his head that way for fun?
- you are leaning forward, but it looks to me (from the horse's leg position) that maybe he was being pokey and needed some extra encouragement? Lowering your stirrups will place your leg in a better position to communicate with the horse and will take less effort to go and you can relax and sit up straight.
'nuf negatives! He is has a very elegant/graceful build without looking skinny, and his coat is very shiny and healthy (dapples=happy horse
) his ears look relaxed and attentive, like he trusts you and is enjoying the ride. :)