Drawing a Man in Glasses

Its been a long time since I last draw a free character with glasses. What I love most is the effect it usually leaves on the residue of skin that is caught up in it. This one though has only a mild ring to it but I am very sure that you still can spot it. The reference is not too farfetched from mine as I had little time to draw talk less improvise. I would ensure though the next time I make something like this that there is a proper mirror effect.