I have to be honest and say I don't like it. There is too little defining his facial features and too much emphasis on the white and shiny bits in the photo, in particular his glasses and collar.
I can see it as an album cover if it fits within the planned layout but then again the only C&C that matters is the one from the client. Does he like it?
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There may be some truth to this. Test to see what it looks like printed. It's a bit dark and contrasty, which sometimes doesn't look too good on print. Good luck!