This has always been my very FAVORITE way of paper piecing. I am cheap and buy the huge roll of freezer paper at the grocery store, than trace my pattern, staple a few sheets the same size to it, and run it through my unthreaded sewing machine so the pattern is transferred to the other sheets exactly. You'll find that typically you could get several uses out of just one pattern since it's not torn away. :) LOVE it!!!
BTW, GREAT job on the tute!!!