My friend Cyn sent me to a blog
that was having difficulty setting a Mariner's Compass into a background. I remembered a quilt I had made a couple of years ago.
Cut a circle out of the background, 1" smaller than the circle you want to set into it. Mark the quarters of both and match up. Pin well around the circle and machine stitch. I sewed with the BG fabric on top. I have a WIP of another one that I started somewhere. I will try to find it and post a picture.