It's dramatic lighting. What bother me the most is not so much the lack of fill on the shadow side, but the black, featureless eyes. When the entire center of the eye looks big and black, it makes the person look like an anime cosplay person wearing those weird black-eyeball contact lenses.
The texture on your skin and jacket? Excellent! I just wish it had a liiiiitle bit more fill light on the shadow side, and some detail in the eyeballs.As an added nit: you have what are called "canoes" under your eyes...the sclera are forming "canoes" because line of gaze is rather high up.
Selfies are very difficult to do. As a selfie, pretty good. A really rich, deep B&W conversion routine, but again, for my taste the blacks are too black, and drop off to deep,detail-lessness too rapidly. The silver-toned look of the mid-tones is very lovely and rich, and looks like a luminous B&W print. The highlights are awesome too!