Oh dear! I can't sew a straight 1/4 seam ever. It was causing me too much stress for years, so I gave up striving for it and settle for "good enough." I'm astonished at the perfect seams and piecing I see at quilt shows and admire those who have mastered it. I once saw a show where a lady said that if her seam was one thread off, she'd rip it and do it over again...not in my lifetime!