This is a good workman portrait. I like the toned down color. On my LCD it looks too sharp but on tube analogue sharpness is very near perfect - there is no answer.
This has the beginnings of a wonderful piece of art. This is where my inexpereince with photography is going to show through. I cannot pinpoint exactly where this off. I have no idea as to why this seem just shy of a perfect shot. This tells me that it must be something in technique or processing. As I am not a photographer, I cannot help you with those things. I would suggest sending this to the Critque Club or posting it one of the forum threads for more advice.
Odd processing on this one - it looks as though a noise reduction process was a bit overdone. I love the expression on the subject's face and the red hose is rather strategically uniquely placed.