I teach the women in my Learn to Quilt classes what I learned from Harriet Hargrave, and it works, if you have patience and persistence. Measure and cut very carefully. After sewing each seam (with 40 wt thread), starch and press well at least twice. After each pressing, square up (really important). When the block is finished, starch and press, more than once if necessary. It is imperative that there are no little valleys in your seams; starching and pressing the living day lights out of it works ( be sure to PRESS, not iron, and do not stretch your fabric). Your block should feel like lightweight card stock. It's not what you want in your finished quilt, but it's very helpful during the piecing process. The starch will wash out. Good luck and let us know how it turns out.