I dunno if you know some of them, but there is a few artist that work in a very liny style. Lots of liht lines creating shadows. Nothing really compact, just light drawings. I think it's a style that works well for you, as this drawing proves. The guy that does megatokyo also uses this type of style.
no subject
no subject
no subject
no subject
no subject
no subject
no subject
no subject
no subject
no subject
no subject
no subject
I love drawing in pen, too, so I suppose that helps =P.