I've tried the "new" way to make HST where you sew around a large square and cut diagonally twice. I starched the heck out of my fabric to tame those bias edges. My blocks went together without much problem but the fear of handling the HST too much and stretching the bias was just too stressful for me. I have gone back to the old way of making the HST two at a time and trimming them and I was much happier.