I had this submitted for "Lighting", but felt that it was far too subtle a connection to the challenge, and went with something else instead. (Ironically, I think the photo with a stronger connection will get voted even worse, but I love it anyway).
I've never seen such intensity in a child's eyes. This is just outstanding!!! I wouldn't change one thing. The slight opening of his mouth and showing of his little teeth is a nice touch. Whoever knows this child would certainly want a big print of this on a desk or wall! The slight softening of the focus is perfect for this portrait!!
Fantastic focus and DoF, really brings the attention to the amazingly contrasty eyes, where everything else is so soft! I would be tempted to use a warmer tone though, rather than the slight green tint you seem to have used.
It's a good portrait, but the eyes seem a little creepy to me. Or maybe the dark part around the iris is too thick. Something is just weird about the eyes.