Although C&C welcomed, this is not the primary purpose of this thread.
1) The background was changed. I can not find any artifacts. The background was changed due to the fact that the original background, to put it very simply "stank". This could have been easily avoided by placing the subject in a more suitable location. This will also avoid PP in this regard. I have learned to get it right the first time, and not rely on PP to correct your mistakes.
2). There is glare on the glasses due to frontal flat lighting. I hope to avoid this (frontal flat lighting) in the future since I am planning to bounce the light to subject's left or right side off of a white reflector avoiding some direct frontal flash by using a black foamie thing (BFT). By using a white reflector, I hope to avoid color casts from the wall.
3) I believe I could have posed the subject better; however by the expression on his face I had him engaged with the shoot.
4) There are catch lights in the eyes.
5) the exposure is to hot.
The purpose of this small exercise was to become more critical of my own portraits so I can avoid making the same mistakes, and as a result came up with a whole new batch of mistakes to make.
Feel free to come up with any positive or negative comments regarding this photo, although, as stated above, this was not the primary purpose of this thread.
Bruce