Critique on portraits

[PhotoOOI]

A friend of mine wants some critique of portraits. Please take a look at his site and provide comments. The site:
Link deleted since you are not showing you own workhttp://www.pbase.com/gevor
Here's a sample.

Sample pics deleted since they don't show your own work

 

[Steel26]

#2 is my favorite a lot of people dont like the selective coloring but im a big fan. on the last one I would have left a little less headroom

 

[oldnavy170]

I think #3 with more crop and done in B&W would look awesome!!!! Anyways, thats just my own opinion.