The portrait is with excellent use of the light.
I like it!
Allright, I guess, as a test shot. Composition is almost non-existent with the face right in the middle and the shoulders awkwardly cropped. The left side of the face could be lit slightly better, and be sharper. I also can`t read very much from the expression in his eyes. As a trial - okay.
Sharp right ear looks slightly strange
Maybe cropping would help.
I would leave some spaces for the direction of his sight.