mindless

The Bernina / Sugaridoo project is reverse applique curves. Draw the curve on the paper, stack main focus fabric, background fabric and paper pattern, sew on the line, clip the paper, main fabric and the curve, turn and topstitch down. Any easy to tear away paper will work, but it won't work to sew beside the paper in this case.
I like using quilting paper made for fmq ...mostly because I bought a whole roll of it for fmq. It's very thin, and easy to remove.

edit: I was just thinking ... you probably could sew beside the line, but it would be difficult for me to fold back the paper on a curved line. The curve is almost a half-circle. There is a template, but also an option to do free form curves. So, I guess you could sew beside the line if you wanted to try that. Then you might be able to reuse the paper template.