How to sew a hidden button placket on a shirt

The pink tape is made of urethane foam with a sticky surface. It is very useful as a guideline for stitching. We buy them in a kind of professional shop in Japan. The information of this shop is secret.(12:02) 1 needle sewing machine : DDL-5550N JUKI 1 needle overlock sewing machine : MO-3604 JUKI Corded buttonhole sewing machine : LBH-782 JUKI Paris collection, Tokyo collection etc... Sample garment factory Atelier Saison. We have sewed at Shibuya-ku, Jingumae in Tokyo for more than 35 years. *This is a machine translation and may not be a perfect translation* #Sewing