Last year I entered the Halloween contest on ZCentral. The breif was simple choose a horror character from a list. Then create an Illustration depicting a humorous scene. I was unable finish the entry as I became Ill and could not finish it in time. As part of the contest you were required to submit WIP's that explained your process. I thought it might be of interest. I started the Illustration with a pencil sketch then some research, opened up ZBrush and started sculpting. I would then have rendered it out in ZBrush, then post in Photoshop.