Posca Helmet Doodles

Recently I pick up some posca markers with the intention to draw on my helmet. But being completely experimental me with no-direction in mind I came up with this. I think it's not a bad start. Didn't they say mistakes first and finesse later?

Anyway, here are a list of really cool motorcycle graphics.

http://ornamentalconifer.blogspot.sg/
http://www.bmddesign.fr/