Sketch Cards

Although I've done a few sketch cards, I feel like I'm in a perpetual state of not getting it when it comes to the sketch card scene. Last weekend I was a guest at the Fan days show in Dallas. A few days beforehand, I was sent some blank cards I drew Star Wars characters on them.  When I got to the show, there was an exchange system that was a little odd, so instead, I just sold a few of them.  Doing the cards themselves was kinda fun, the blanks were too slick to draw or paint on, so I sanded them down with a fine grit sandpaper.  Once done, I was able to achieve some rather fine line work.  Most of these are still available if anyone is interested.