+'s: Pretty head, he's in pretty good shape and he's cute to watch.
-'s: He seems to be pulling on the bit a little, and he looks more concentrated on something up ahead rather than on you. Also (and I apologize if I offend you. I'm just trying to help), you (or whoever is riding) should straighten your posture and put your heels down.
Hope that helped! He really is a cute little Morgan.