Hi Zane, welcome! 
That is a drawing well done for someone new to the genre.
The lines and curves are quite smooth and elegant, and the toning done nicely.
Advice ...
Practice, of course ... and if you are specialising in the human figure, acquire some books on the human anatomy as well as on drawing. Or perhaps get a friend to pose for you - live references are probably better than photographs.
Careful about the proportions and placements, though. In this case, would you think the (upper) thighs are a bit thick for the slim waist and torso? The elbows should meet roughly at the waist; in other words, the length from shoulder to waist, in case the arms are extended and you need to check for an estimate length. Her left forearm appears longer than her right, you might have to do something with foreshortening and angle to make it less pronounced and more natural (if that is the desired effect.)
The shadow in the background ... of the left forearm - a portion of it seems to be thrown in the wrong direction (left instead of right side of the drawing?) compared to other areas.
Keep up the good work.
Hedgeworth
