Very nice composition but the overall image is just not sharp enough for me. I would like to see the focus more on the horses eye. You have managed to get some nice light and colour on the horses hair and your DOF is good :o)
Not sure what to make of this one, have looked at it for a while. It has a quality to it, just not enough to really draw me in and get the highest vote.
Tip here...make your photos as large as possible 'Free study 720 on the long side', old blokes like me have trouble seeing them and viewers tend to pass over them