Position the zipper right sides together to one purse section along the top edge. For Serging your zipper needs to extend evenly beyond each edge. This is important so that you do not hit the metal stop or the zipper pull.
SERGERS Only -set your machine to a balance three thread over lock following the directions in your manual.
Lift your presser foot up and position the fabric/zipper (see below) under the presser foot. Serge (sew) across using a 1/4" seam allowance. Repeat for the other side. Press all seams facing down towards the bottom edge.