1. Pick a needle on the surface of the cloth and pull the sewing thread to pull the initial knot into the interlayer of the cloth;

2. The suture thread passes through the pin hole;

3. The sewing needle passes through the cloth along the edge of the buttonhole, then passes through the buttonhole and winds the thread under the needle;

4. After pulling out the needle and thread, there is a knot on the edge of the buttonhole;

5. Repeat steps 3 and 4, continuously cut stitches and sew all buttonholes in sequence;

6. The sewing needle goes out from the back of the cloth and makes a seam stop knot;

7. Drop the needle at the position where the seam is stopped, then take out the needle from the far side, pull the suture, and pull the seam stop into the fabric interlayer;

8. Finish sewing the pin;

9. The female buckle can also be sewn in the same way.