Some of my strips were jelly row strips and other 2 1/2 inch strips I saved. It work out good on my non jelly roll strip quilt which is in the picture I posted on my recent post. I pressed all the seams the same way when i finished. I have not sandwiched or quilted yet. I pressed each t section open as I sewed. You don't have to do this extra step because they don't stay that way when you press the long seams. Good luck and it does work.