Ah, now it has worked.
I like the lighting, although the shadow just behind the subjects head could be cloned out. I don't normally like mono's that have colour left in them, they very often don't work (for me anyway) but your shot does work, I think because the guitar is white and blends in well.
The composition is good, I would have cropped a little further right so you could not see the door edge at the bottom right of the image (but thats just me) and like the I say to the barber "a little of the top please" hehe.
Nice image though, I would like to see you do a 'rockin' out' version
WW