composition - you want a tighter crop here. the clutter around your 2 subjects (primary intended child, secondary intended mother) but understand this could be lens limitation.
however, what was under your control was the perspective. it is best to note that if you want to take animals and "humanise" them, it is best to take things from their perspective, i.e. a lower level. here you have taken a "top down" approach, it is not going to communicate your idea well nor place your subjects in the most photogenic light.
if you had done that, definitely cropping might help. as for focus on the child's face, it is easy, dump all color since it is a lighter shade than the rest of the picture. if that is not enough, you can always photoshop in vignetting.
unfortunately, because of the initial perspective flaw, all these cannot be done.
i have done something (4:3 crop) to illustrate what i mean, with a sepia tone, but it is probably not the best you could bring away from the scene.
cheers.