First People Post - CC Requested

This is my first post in the people forum. I took this photo earlier in an office with a white background. The color was added to the background afterwards. Other than that and some mild cropping and very mild blemish removal, the only other PP was saving for web for posting here.

Any thoughts on what I could have done differently would be appreciated. This wasn't a formal posing session, but rather a guy looking for a digital SLR wanting to see how the camera worked. Surprisingly, I think this one turned out better than the ones I posed him for.

No flash was used, ISO 400, 28mm prime, f/3.2, 1/100th.

Thanks in advance!

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i dunno if pink is a flaterring color. for him, or any male

How about this one then? In addition to tweaking the photo filter, I added a warming filter to the subject, as this color seemed to make his skin tone too pale.

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The green backround works a lot better for me. Nice shot, try to get alittle more light in the eyes.