There is no way I can criticize the modeling or rendering -this is so far beyond what I can do it’s not funny:-)
But as for the image itself and its impact; I find the snarl to be overkill, it somehow detracts from the emotional impact of the image.
I have two thoughts: To just show the mother looking down at the child as if perplexed that such a child is at her breast, or perhaps looking at us like the cat that just ate the canary - what are her intentions, to help or hurt the child? Or,if you really love the snarl, put it in context as a reaction to the viewer - for example snarling but with her body language protecting the child from us, the viewer, as though we were the monsters.
Either way I think going with subtle body language would dramatically raise the impact of the image
Hope this isn’t taken as nitpicking; it really is an amazing job !