This doesn't look like a "rough charcoal sketch" to me, unless what you mean by "rough" is that those hands look stranger and stranger the longer you look at them.
Rough charcoal sketch. Close-up portrait. A man with a strong expression and worn hands, sitting in a cluttered studio. Expressive. Visible scratches and smudges. Dramatic chiaroscuro lighting. Strokes of genius, intense emotional connection, Interesting composition. Strong storytelling.