|Move your needle so it’s lined up with the groove on the right-side of the foot (this foot has a screw and is adjustable — you can slide it back and forth to align with the needle as you’d like).Place your fabrics right-sides together and line up the edges. Pull the bottom of the zipper tape out a little. Line up your needle just to the left of the current row of stitches, just above where you left off on sewing on the zipper. Start sewing your seam allowance. Go a few inches, and if you’d like, switch to your regular presser foot to finish the seam.
On the picture at the right, above, I marked the two seams in blue. I’m not sure if you can see it as well as I’d like.