The set uses two different designs (a Darth Vader helmet and a Storm Trooper helmet) to act as the canvas. And rather than going the traditional sketch card route, the die-cut sketches are being done by well-known underground artists (if anyone who's considered underground can be well-known). The result are some, well, odd looking cards. Here's a couple (images from StarWars.com):
Yes, that is a kiss mark and those are two praying fingers standing in spaghetti on Vader's helmet. I'm still not sure what to make of them on a personal level. They're definitely unique conversation starters but I'm scratching my head over what praying fingers standing in spaghetti mean. Toss in the Star Wars reference and you've got one of life's great mysteries.
And while these certainly are weird, there's lot of - how do I put it politely? - enthusiasm (that is not me) towards the franchise.
Here's an article that explains the background of the die-cut sketch cards that, at the very least, has made me respect the art of these cards and appreciate the fact that there's still a little risk-taking going on in the hobby.