Cute pic. Thighter focus on the baby, showing a bit more of the high chair , and less focus on the wall in the back could have added a lot to this pic.
Nice job captureing the moment. Bit of a snapshot feel to this. A shallower DOF would help as the background is very cluttered, I wonder if this could be staged, kids aren't usually that patient when setting up shots :)
hang a white sheet behind him, bounce a light around that paper onto his face, get him to look at camera (easier said than done, I know) and you've got yourself a 7-8 in my opinion - but this just looks like a snapshot with that background 4