I agree with the rip answer.Also,you need a good 1/2 in seam allowance.I'm a long armer,and the 1/2 in. seam allowence keeps the seam from popping up when you quilt it.You don't have enough control over the seam. At 1/4 in.,they almost stand at attention if they are only 1/4 in..Press the seams open.That is important also.They stay very flat that way.Good luck,take your time.