First, prepare a thread, then put a needle at each end of the thread, and then cross stitch with two needles. The following is the specific operation method. First, preparation materials: leather, needle, thread.

1. First, put one needle at each end of the needle, and then put two needles on the leather, as shown in the figure.

2. Tighten the thread, then clamp the thread of the No.2 needle with the ring finger and the little finger, and then pass the 1 needle through the position of the No.2 needle, as shown in the figure.

3. After putting it on, tighten the thread.

4. After tensioning, repeat the above steps and thread 1 needle through the leather.

5. Clamp the thread of the 1 needle, and then thread the No.2 needle through the position of the 1 needle, as shown in the figure.

6. Sew the leather repeatedly, and then tighten the thread slightly.

7. After sewing, use the same steps to sew back two stitches.

8. Finally, cut off the extra thread.