Do you remember this guy?

Yes, you're right. It's Ross Perot- the Independent who ran for President back in 1992. That's when I did this drawing; I know, it's old, but I never posted it before and did it at a time when I didn't have a computer, blog, etc. Most people didn't at that time.
Anyway, if I would change anything on it today, it would be to make his eyes farther apart. The way I did this drawing back then was to draw "blind" at first to get at the person's psychology and to be able to see more. When you work this way, you're using your "inner eye" and it's more highly concentrated. More of the details tend to emerge and you get a better likeness. After the contour is drawn, you can then look back and forth to re-asses things and put the shading in.
I was also trying to work with the idea of the duality of people. Most people will have a difference from one side of their face to another, and it's important to see the differences if they're there. If you cover up one side of his face and then the other, you should be able to see two different aspects of his personality.

I just altered the original in photoshop to separate the eyes a bit- here it is.