I saw something the other day about a women using freezer paper to paint on her quilt, after cutting it out the stencil, she ironed the stencil onto the fabric then painted the fabric. I would use the chalk method because I have bought several pencils and nothing has really worked on my dark fabric. I bought a sewline pencil that did alright but lines went away fast it wasn't real dark. Now I'm using a water soluble marking (white) pencil that is working a little better but not as good as I would like for it too. I hope this helps.