Commenting only: I like the composition of this, and the intense pose/stare. My detailed crit is the highlights seem a bit close to overexposzed. Might have been interesting to darken it a bit more, and if you wanted the left right contrast, let the right side of the pic get a bit darker as opposed to normal.
Eyes are great. Something about the high key skin brightness and mix with the eyes seem not to go together for my eyes. Compared to the left side of the face, the high key side just seems overexposed to met, rather than having that neat high key effect.