Very nice shot. Could have gone with a higher ISO and then used Noise Ninja to clean it up...but better to have the shot, then lose it while fumbling around trying to find the right settings. The little munchkins don't sit still for too long. :)
This is my favorite portrait shot. It is amost like a grown up person staring at you. It is different from the "overly smiley shots" that kids give you.