A self-portrait takien whilst holding the camera? If it is, youhave made a reasonable fist of it, if not, you need to spend a bit more time considering the composition. Either way, as a stand alone photograph, there are some problems - in particular, the enlarged forearm, which is just too close to the camera. That said, you have obviously takentime to consider the light, the background and the pose, which is good.
Too much detail is lost in the darks. I can't see where here hair ends and the background begins. Also could be a tad sharper. The arm is a bit too prominent in the foreground like that. Nice eye contact. Her shirt is also a bit distracting. Just my opinion on seeing the picture for the first time. Hope you find it helpful and not just critical.
Way too dark, the way her hair blends in with the background it makes her look bald... which could have worked to your advantage with a bit of creative cropping, but when you know she has hair it just looks really odd. The expression is engaging though I wish her arm wasn't so prominant in the shot. The border is unecessary.