Cool! Very simple picture but with unique style. I can clearly see good knowledge of anatomy (something says me you use gesture drawing a lot :D, what is good).
But still i have some advice (or at least my own opinion) how to make this better.
1. Arm in behind (her right) looks a bit strange in way of pose.
2. Because you have simple drawings it would be better to draw more characters to make it more interesting (with some story behind the picture in best).
3. Again, cause of simple drawings would be cool to see background aswell.
So that's all advices i can give you :D Thank you for sharing your art, keep it up!