You will also need a circle (or a half circle). Before I found this "Circle Cut" I was just flipping my mixing bowls upside down and tracing them onto butcher paper and using them as templates. This circle tool is neat because you don't have to have a pile of ratty looking papers cluttering up your sewing room. I found it at Hobby Lobby. Oh and you need a chalk pen or a regular pencil to mark your arcs. For this demonstration I used the chalk because the strip I will be quilting is black.
Mark your first arc.
Mark the arcs on either side. I like to make a little dash where the center of the circle are. That will help with the next step.
Now you chalk in the overlapping arcs. That is all I mark. I will now quilt them down.
Quilt one line right on your chalk arcs, then quilt another line right under the first line (about a quarter inch space between lines) This outline or Echo is important. It makes a frame to keep all the detail controlled. I know this isn't perfect. But I love the imperfections of this. I am not a computer. Thank goodness!
Now quilt the design of your choice in the arcs or windows.
Good luck! I would LOVE to see how you go if you try it.