I like the background, because although it is even and gray, it still has a slight gradient to it and it has texture. While it does look like a background from a photo studio, it still looks real enough to make this photo believable. Obviously set-up shots may be pleasant to look at but they hardly ever tell a story. This one does, like others have already commented. The story stems from your pose. The hands and your face are very interesting. The hands and fingers have movement in them, and I'd like to know what is going on there. Do you yearn for someone to hold, like your hands entwine each other? If so, why do you look away so sternly? Is it to deny your need or to ignore the fact that the only hand holding you is your own? Probably you just did that because it looks good... but it does make the viewer think
Not sure if I'd like to see more contrast between light and shadow here. It has a good dynamic range as it is, though. Maybe a backlight to bring out your right shoulder and hair a bit more? Now the photo is slightly unbalanced as the lower left corner is almost black. Also a small spark of light in your eyes would've helped to interpret your expression. Now your eyes are nearly lost in shadows.
All in all I think this is a very curious photo, and I would like to hear what you thought about when made it. Why this specific pose?
I am extremely drawn to this image, but I'm not sure I know why exactly. I find the hands fascinating, they are so alive, and they tell their own story. I also appreciate the overall strength that this image holds. Your features are so bold and defined it is hard to not look strong, especially in profile like this. I find the arms to actually be the part of highest impact in the piece because of the intentionality.
The only suggestion I might offer is to blur out some of those crinkles in the background drapery, they aren't extremely distracting, but they can be after staring at the piece for so long. Wonderful work.