making logos?

we have an assignment to make a logo for the illustration department here at KCAI
I'm trying to do something pretty graphic, that can be used not just for a logo but also for a business card.

Ideally the white circle would be die cut so I could work as a business card that could go on a keychain, the information would be on the other side.

here are a few of my initial experiments that I started on the computer after I sketched the design by hand.

 

here are some more I did later