Cute
Really like the background that goes with her. It makes her seem light and bubbly in a nice way actually. Would love to see what she does that makes her rock? Maybe she plays drums and does vocals at the same time as that would be awesome too.
Her outfit looks quite cool though. Her hair looks pretty awesome and long which makes her look even cooler I suppose. Really like how part of her belly is also exposed to kind of attract people to her I think. The wristband looks cool as well.
Her smile makes her look like she simply enjoys having a good time and she has a good amount of earrings on as well I think. The tatoo on her arm looks fake which is cool I guess since real tatoos tend to be things you regret later in life as people don't want to be near you unless you are famous or somewhere close to it.
The pants and tube top also look awesome. The tubetop has frills and two tone coloring to it which is awesome I think. The pants could be any surprise so it leaves you partly in suspense as well.
Overall, I would say you did an excellent job with this piece of art. Good luck on future pieces.