I have never shot a child, so I'm not sure how valid my opinion is: but I think the shot would be better if the child was looking at the camera. With the child just looking off away, it makes it seem like the shot was just snapped, or at least it would if you couldn't see the portrait backdrop. The lighting is good though, I think. Again, take what I say about this with a grain of salt, I am by no means a portraiture expert, in fact...I know very little about portraits.
I don't want to sound insensitive but:
WHERE THE HECK ARE HIS FEET?
I agree with The Traveler. But, the problem that I've been running into is lighting the backdrop when the subject is so little and the prop has so many spaces. Without just rigging something up, what would you suggest?
I would have taken it from maybe the level of the rocking horse's head looking slightly upward. And I find the backdrop distracting. Use a lower aperture so the background will be more blurry, try to get the baby to be the major focal point
Iron\steam or throw the backdrop in the dryer, those creases are terribly distracting me from the cutie! I too would like to see him looking at the camera; as well as (previously said) the camera angle is too high for my taste. The colours and lighting seem nice from what I see..