Cute baby, the focus seems a little off and the shadow it a bit distracting, however I guessing this photo has a lot more importance to you than shadows and lights! :)
I LOVE baby pics! (Too many here bellyache about them, I've noticed). I will suggest, though, that if you'd gotten more face and a little less tummy it'd be a stronger portrait. I like that there is a reflection of light filling in on the (to us) right side of the face. It softens the 'hatchet lighting' with patches of sunlight and shadows that can take so much of the details from the face. I hope to see more of that precious smile!
The lighting creates harsh shadows on the subject and the background. This destracts from the subject. Recomend diffusing the light, or removing the light and increasing exposure time. Also the expression of the subject seems awkards at best.