A great capture of the subject's personality - something every portrait should strive to do. The lighting seems just slightly off... it may have something to do with teh white balance. I'm not sure. I think it picked up a bit of yellow from the surrounding areas. I'm not sure if maybe doing something with the colour channel woudl help. Overall a great idea and a good image for this challenge.
Great lighting, color and focus. I would like to have seen this with a portrait orientation/crop. To get in closer, leaving a bit of space on the left to include the cord and give illusion to where he is looking.
"It is easy to make a picture of someone and call it a portrait. The difficulty lies in making a picture that makes the viewer care about a stranger." - Paul Strand"
I'm missing something particular that would draw me into this photo.
Not a good color T-shirt...for this fella and not in this lighting. He looks all pale/all washed out. Busy background. The focus is good, maybe a tighter crop? Good luck.
The subject is well and sympatheically lit and nicley in focus - it is a pity about the rather busy background. Much shallower depth of field might help to lose the detail but it depends on what your camera will let you do.