Try to sew a scant 1/4", it really makes a difference. If you think about how many seams are in a block and every time you sew if you are off by one thread on several it will make a difference. If I am with in an 1/4 to even sometimes 1/2" on my blocks they will work either by pressing or easing. And the quilt will still be beautiful and lay flat and I can work with the points that will come together with other blocks on the outside edge of the block.