Nice ruler work, Nan!
I joined to Handi Quilter Ruler Club at my local QS, with which I received a discount on the rulers. I bought a variety of big and small rulers. The small rulers ... those that fit in your hand ... are the best if you are using a domestic machine. Even with my HQSS Sit Down machine, I get get results with the smaller rulers. my guess is that large rulers are better suited for long arm machines. For anyone thinking about purchasing rulers, I have to say that the Westalee starter set looks good and is reasonably priced.
Heads Up to anyone who is new to this concept: You will need to purchase a special foot for your machine if you plan to do ruler work.