I've seen what you're talking about danna, but I'm not sure that's the type of "paper pieceing" that's being discussed here. I think what's being discussed is the type of paper piecing where numbers are written on different parts of a block and you lay your fabric down onto #1 face up, and add #2's fabric right sides tog. to it, (allowing the fabrics to cross over the lines to the different numbered sections by approx ½"), then sewing right on the line that was drawn between the two #d sections, pressing out, then continuing until all the numbers have been covered with fabric. That's the abbreviated version, but it sounds different than what you're talking about with the freezer paper. I always use a thin tracing paper when paper pieceing as it tears out easily once sewn with a tight stitch (like a #1), and it's easy to see the marked lines and whether or not you've got your fabric over the lines far enough.