I make one deviation from the instructions on how to make the laundry bags. When I fold the laundry bag top in half I sew it together in a narrow edge. This makes it easier when you put it all together, You can then treat it as a single piece of fabric and no worries about it slipping.
Laundry bag linings all ready and waiting for the next step. It has been quite a while since I have done a mass amount of sewing like this. I find that doing the steps like this quite fun.