I used a DSLR self-portrait I made. Not because I think I look so good (I mean, that's obvious
), but so the client knows they won't be hiring a rooky with a powershot. It also attracts a bit of attention because it's not a standard layout.
I opted to go for the portrait layout for the card (not landscape), because, heck, why not? This way it still looks okay if I use it as a bouncecard for my flash.
I take pictures so quickly, my highschool was "Continuous High".