This is very nearly an excellent photo, but I could suggest one or two things to watch out for. First, the camera has focussed on the fabric of the bonnet. It is very sharp, but her face is slightly out of focus. Try to concentrate the focus of the eyes for a more pleasing result. Second, the bonnet is fully lit, but again her face is in shadow. Lastly, I think you've cropped it too tight, creating a stressful feeling which is not appropriate to a pretty little girl. May you should zoom out just a bit.