Remember the watercolor workshop that I attended last fall. At the workshop I met a group of ladies who paint together and do "Canvas by Canvas" paintings. Check out their blog. Here is an example of their art which consists of nine small oil paintings done separately.
I don't think my art buddies' watercolor will work quite the same. We did not work together in one particular style. We actually decided to purposefully paint in our own unique styles and then show them together.