Just my two cents: If you take your muslin and serg around all edges BEFORE you wash it, it will maintain it's shape better and not unravel and shrink as bad. If you don't have a serger, just zigzag around the edges. This is good for all fabric as it will have an easier time in the washing machine unless you have one of the tumblers like in the laundry mat. In addition, the delicate cycle is much nicer to the fabric. That's my two cents for what it is worth; it has always worked for me. GiGi :-o :-o :-o :-o :-o