the face is well done, the eyes are very expressive, and your shading around the edges of the face has been done pretty well. there seem to be alot of things your avoiding though in this piece, which might be hindering your development. you covered up everything bellow the neck with her hair, and it giving the portrait floating head syndrome. its also something people do alot when they really want to draw a face, but aren't as comfortable with the body, but its a device that rarely works. I would also try to give the same kind of attention in terms of shading to the hair that you did to the face, and definitely get rid of the photoshop brush neon starbursts. other than that just keep going and make more. you have faces down, so really challenge yourself to draw the beggining of the torso and things with the same precision you did the face.