Yes I was trying to sew thru the plastic. I had fabric on bottom then another piece of fabric that was to be covered with the plastic like a pocket. I was trying to top stitch the pocket down. It of course would not stay in place. The tissue paper sounds like a great idea and I have both tissue and parchment on hand. I will also check the needle size, I think I was using around the size mentioned above. Thanks again. I knew I could get some good advice here.