Prompted by the topic of a witch doctor from Sketch Dailies, I decided to not only draw the character, but his laboratory. I wasn't originally planning on this much detail until I got carried away by inspiration. It took me much more than a day.
Please click to enlarge:
The base line drawing:
I didn't base it on any specific culture, rather I combined multiple tribal objects and imagery, including a dose of fantasy elements.
I wasn't going to draw him naked but a loin cloth or grass skirt seemed too cartoony. When I first sketched out the figure, I decided instead to dress him in only tattoos.