Lighting: Good light, good catchlight for expressiveness.
Pose: That expression has got to go.
Background: The work done on the background is obvious, particularly in the hair at the top of the head.
This shot seems to be very flat. The lighting doesn't help to bring out the depth that helps make a portrait different from a snapshot. What is the glow or halo like effect on the left side of his face? Awesome catchlight in his eyes. I gotta figure out how to do tthat so nicely!
TC
Clear and focused; however it does resemble a driver's license picture rather than a studio portrait...perhaps from the expressionless pose and the centered composition. Reshooting with a more dynamic pose and expression would give you a different result. Good effort. :o)
Decent lighting on this shot. There needs to be a little sharper focus on the eyes though. I can see a haze around his outlline that is a bit distracting.
The focus is too mutch on his nose, it maybe better to use a different lense (if you have a DSLR so you could have some distance between the camera and your subject.
There seems to be some kind of light halo on the left side of his face. Pretty straight forward shot. Looks like a regular photo, not one that would seem to be taken in a professional studio.