Trim the piece by adding 3/8 from the edge of the interfacing.
Sew them together with a 14 seam allowance.
Turn it wrong side out, then center the zipper, and arrange the outer and lining nicely.

Image credit: sewingtimes via YouTube
*All these images are credited tosewingtimesvia YouTube.
Scrap Fabric Tiny Box Pouch Sewing Tutorial

