The first one is a doodle I did last night... I really don't have an explanation. I've just seen drawings similar to it before. The second is a small drawing I did in my sketchbook several months ago. Done with Copic Markers and photo reference. The last is something I did for a homework assignment in art class. Got an 85... that's not fair, right? Once again done with Copics.
I normally post pictures of small things like these on my tumblr --> [link]