I recently picked up Malifaux and wanted to do some themed basing for my Seamus and Red Chapel Crew. With Seamus being a Jack the Ripper type character, it was an easy decision to go with some Cobblestone Street/Sidewalk bases. Here is my first attempt at sculpting cobblestone streets.
Pretty simple really. Just some green putty spread out over the base and cutting in the cobblestones with a sculpting tool. I cut a piece of sheet plastic roughly into a circle and after sanding and checking for a tight fit chopped it roughly in half. After the initial putty layer dries, I plan on adding a thin layer over the plastic "Sidewalk" and cutting in a brick type pattern.