Alex,
it's such a joy to watch, because there is so much going on and you have kept it all balanced.
I don't know where to begin, or end, if I should tell you what I like about this charming childrens portrait, I love everything about it.
To mention just one; the bluish reflection on the screen behind the sofa takes the whole thing to a different level, Sargent comes to mind.
Bravo Alex