What I mean is that it is quite easy to make a portrait of a child that the parents will love. It's their child, after all, so even an "advanced amateur snapshot" will have some significance to them. Going beyond that to create a portrait of a child (or adult) that is appealing, intriguing and significant to people who aren't members of their immediate family is quite difficult.
You've created something that concretizes what children really are: marvelous, complex, imaginative, mystical, playful and sometimes sullen or even dangerous. Maybe I'm seeing too far into this because I have three boys (11, 8 and 4) that I know can be so many beautiful and crazy things at the same time.