If you want to mark something like this, Pn S isn't easy to remove, there are better products. What I use is Miracle Film by Marathon. It's a thin perforated Heat Away stabilizer. I use a thin Sharpie to mark my design, let it dry overnight (or cheat with a hairdryer on low heat----remember it's heat away!), attach it with a light spritz of temporary spray adhesive, and quilt on the lines. Because it's perforated, it tears away so easily I've never had to use a hot iron to remove any of it.