This one was unusual for me in that I drew & inked the characters on paper instead of straight into photoshop. I've been having shoulder pain for the past half-year or so and I think that working all day in front of the computer with my 4x6 wacom has contributed to that. It isn't as bad as the wrist problems I was having working with a mouse but I often come home and work a few more hours on my own stuff-- that's probably been my problem.
So, in the interest of staying healthy I've been working the old fashioned way for my latest projects at work and it seems to help a bit. It's even kind of fun. But I'm not used to this buildup of pencil lead and ink-spots on the side of my hand– I've got to learn to stop wiping my brow with that stuff.