Using a walking foot is probably a good idea. Since I have a Pfaff with the built in walking foot I don't think about that. I did mention in my thread that I used foam board from Hobby Lobby for the bottom. I just make a pillow case and slip it in. It is working out great. I have had acrylic cut for the bottoms of some Bible Totes I made with my embroidery machine. I just can't cut that myself. You can buy that at your local home improvement store in the glass area and have them cut it to the size you need. It makes a good sturdy bottom. Have fun.