Ok, I want to make myself a quilted tote bag but I want it to have some heft to it. What can I cut to size and put in the bottom and in the sides to make it really formed? Would tightly woven rug hooking plastic work? Or any other craft plastic sheeting? Would I sew it into the lining of the bag? Maybe there is a tutorial on youtube or somewhere that I haven't come across. There are a lot of tote tutorials but I haven't found one that includes the firming up idea. I am going to be stuffing it with a lot of stuff as I am hoping to take it as a carry on/purse. Thanks for any help you can give me.