I use 1.5 stitch length using copy paper. I sew #1 to the right of the seam between 1 and 2 to secure to the paper, making sure there is 1/4" from the printed line. Then I sew #2 on the line. Don't fold over and iron just yet. I place a large recipe card on the printed side of the paper, right on the line. fold the paper over that card, use a 'add a quarter ruler' and trim both fabrics #1 and #2 to 1/4" seam. Remove card, fold paper over and iron to set. I do this for every seam. I don't set anything to '0' and always use 1.5 stitch length. The last piece I sew the fabric down just outside the line into the 1/4" outside seam, just to secure it for cutting. I cut out the block. Then I fold the paper back and forth once on each sewn seam. The paper pulls away very easily from the sewn lines.