Hi Jerry,
I have been trying to create a cobblestone effect in the yard but didn't really like the Metcalfe cobblestones, I then tried some stone printed card, what do you think?
The proportions of the stones aren't really the same as setts or cobbles Jerry, and the courses are differing heights. When I needed a cobbled area for my box file layout I made my own using the circular foam base that supermarket pizza comes on. Using the smooth side I simply lightly scribed the courses and individual cobbles with a sharp pencil, and then painted them with appropriate colours of acrylic paints, followed, when dry, with a wash of grey/black/brown to highlight the joints. Doing it this way you can run the cobbles at different angles and include drainage channels etc. It takes a while, but is very satisfying (and cheap!).