Rarely square up blocks. If I can see a few are way off then I remake them. 1/4"inch too big or small doesn't bother me, I can fudge when sewing them together. I have won several ribbons in local and state shows to know it works for me. My Viewer's Choice award was for a quilt that had poor piecing but beautiful colors. Unless making a money winner show quilt no one really cares if a point is not sharp or if one seam is not perfectly matched to another. .