25 Sewing Hacks How to sew in the easiest zipper Sew up your seam as you normally would, place zipper face down over the seam allowance and sew it in place. Cut open the seam with your seam ripper to reveal the zipper underneath. via (makeit-loveit)
Couching is simply sewing a heavy thread in place with a finer thread. Its a retro technique, too, that was originally done by hand, but it works beautifully by machine as well. I use a zigzag stitch to secure the heavy thread in place.