Now you see, I would disagree there.
I like No 5. Having 2 little girls of my own, I recognise that attitude.

If I was being critical, I would say No2 is the weakest, but not nessesarily photographically, mostly because the girl's facial expression is wierd. She needs to be either smiling or laughing for that to work. The mouth open just says "I'm chewing".
If you had several shots of that pose, I would pick a different one with a better facial expression.
Lighting wise, No 1 needs a reflector to fill in the left side of the face a little.
And as said the blue LED on the Harry Potter Wand needs to be fixed because it's burnt out white.