for probably your first pic with this a new camera.....this is pretty good
the blue in her eyes is absolutely fantastic!! you should try a portrait of her. she seems like a willing subject and has a great smile and real "life" in her eyes.
the composition could be better. what i usually do when i am taking a head shot is to turn my cam sideways. it helps to reduce the amount of background so the viewer's attention is more on the subject. like this: