Creating diversity in a portfolio representation for a man happens slightly differently, as hair and make-up changes are not altered too much, although beards shaved and hair cut can make huge differences.
Lighting, backgrounds and outfits all help to do this too, but mostly it is a directed change I suggest in the mind to create the emotion that comes out through the eyes.
I love this challenge! And I also love the fact that I have this ability to create these changes for my clients.