1ST STEP

Seperate the zipper and first start to sew the divided part that is without slider and box

2ND STEP

Now sew the other part which has a slider & box on, do not continue all the way to the end, leave around 15cm or 20cm at your convenience.

3RD STEP

Raise the sewing feet, move the slider & box to the sewn section, re-position the sewing feet and finish the sewing to the zipper end.

4TH STEP

Move the slider & box back to the end as they are originally, join both parts of the zipper.