It's a nice idea for your ID, however there are some things which I'd like to remark.

The pose of your figure has a nice flow, but if you look at it, there might be some... odds. As an example, your character looks to a farther place and is turned to the left. If you do the pose yourself, you might notice that the legs are a little off. I'd recommend to make the left leg (from the viewer's position) a little thicker into the direction to the right leg; furthermore, if you do this, let the lines which you draw for the left leg be in the front. Perhaps you could indicate her bottom with the same line you drew the leg with?
The head itself... is a little too much of a side profile. You should have tilted it a bit more so that you could see a little of the ear.

Apart of that, I'd like to remark something about the face. I must say, you did better than others I've seen - however, let me give you some tips.
In my opinion it would have been better if the distance between lips and chin wouldn't have been so big - a little less often helps a lot. Perhaps you could indicate where the jaw ends? (look at a mirrow; you should be able to see a slight shade where your chin ends. It goes a bit farther back, and this is what I mean.)

No, let's move on to the arms of your work. The left one's lower arm (viewer's left) sticks out a bit too much. By doing this the arm looks unproportional and unnatural.
The other one... I wonder, can you bend your lower arm like this? You should either turn the whole lower arm into this direction - or simply make the bending of the wrist stronger. [I would recommend the first.]

So, all in all it was a nice idea; and everything that isn't good yet, can be changed! I think with more practice you'll change this easily!