Since you asked, I can be critical, right?
To me, this portrait of a child does not work very well. Here are my reasons. First of all, it does not look natural. The setting, the pose, the expression, and choice of clothing does not belong to a child of this age. It's more like moody teenager type photograph. Also, I'm not sure what this photograph says.... It doesn't say happy child. It also doesn't say she's sad about something. It doesn't say a child being herself. It doesn't say.... anything particular. My eyes goes to her eyes immediately. (that's great) but then goes to her right arm and right out the frame. (not good)
Not saying I can do better. But this is what I would say, if I was asked to comment critically. I'm sorry this is so critical and negative.