Depending on the size of your pinwheels and how detailed you want to get, I'd probably try to do a small design in each pinwheel...a small heart maybe??? I did a pinwheel quilt for my young niece last year but had a directive of 'no hearts Aunt Kim!' so I was kind of stuck! And the pinwheels on hers were kind of small. I think I just did an outline stitch on hers. Do you have any single elements in some of your stencils that might work? I have a NY Beauty that I'm having a dickens of a time trying to figure out how to quilt. Have to take my own advice here and look at my stencils with a fresh eye and look at some of the individual elements in them....hmmm.