The kid's face is a little soft (chocolate as a bribe perhaps?), and I personally would have cropped out the ear completely, but other than that the placement is good. Similiarly the leaves/flowers are a little dark and the buds seem to be closing so I assume it was fairly late at night. There is either a tree or a plant limb of some kind very near his forehead and it almost looks part of his features. The bottom right has a blank area of black that stops the flow/pattern of the leaves. It's a good shot, but I think a different time of day would have helped it greatly.
Great expression, inhaling smell, peaceful. however the light is too blue and flat. The picture to dark and flat. perhaps taking this at a time with more sunlight.
DOF and unnatural skin tone. You needed to get some light in here - at this close range flash wouldn't have done it - perhaps consider getting a reflector.
I like the smelling expression on the kid, really actively showing him taking in the scent fits the theme well. A little more post-processing in a photo software program might have helped though...its a little dark.