Back piece: double thread starting 122 stitches, weaving 4 rows, changing to 77 washboard stitches. Sew 8 stitches under the armpits on both sides, and then knit a washboard with 2-2-2, 4-2-2, 4- 1-2.

Side acupuncture treatment: particle side acupuncture, one needle slipping, one needle descending, one needle slipping. The back piece is stepped about 12 cm, and the needle insertion method is to lower the needle: first lower the needle by 4 needles, then put on other needles, and change the needle every 4 needles.

When knitting under the armpit to the length of 19 cm, start to leave 2 1 needle on the shoulder and start to withdraw, with a height of 3 cm. Sew the back neckline with 8 stitches, knit it long enough to sew it on the back neckline, remove the stitches, and add 8 stitches to the shoulders on each side.

Pocket: Single thread starts with 28 stitches and is woven to a sufficient length. Take 1 stitch at the bottom first, and then take two stitches, so there is a small fillet. Embroider your favorite patterns with sewing needles.

Button: Wrap colored thread around the lower end of the ballpoint pen for about 30 times, then hook a short needle, rearrange it into a circle, and then close it into a button.