My Aunt gave me an antique quilt that was pieced on muslin and it didn't wear well. Bonnie Hunter recommends piecing on paper rather than muslin. She recommends using phone book pages or cheap sketch pads from the dollar store. I have been saving the light weight paper that companies use for packing materials. I iron it flat and cut it into squares. It's amazing how many squares you can get out of paper that would otherwise end up in the recycle bin.