If you know where Plymouth, U.K. is then you know where to find Sophie Adamson who submitted these keen skull sketches.
As the "Tatman" of the Skull-A-Day editing crew I feel partially qualified to say that these would probably make great tattoos. Even if they don't become body art they're still great drawings. I just can't help but picture the skull with snakes tattooed across the chest of some guy named "Snake". Check out Sophie's deviantart page for more sweet sketches. Thanks, Sophie!