First find the seam where the trousers are scratched, and then start sewing from the bottom. First, the needle goes out from bottom to top. This line goes through the seam and the opposite side goes out from bottom to top, so that the first line is formed in the middle of the seam.

Then the same, on the right, from bottom to top, the second line comes out. Go through the middle seam and continue on the left. From bottom to top, there will always be a line in the middle of every two stitches.

The last stitch goes through the tail of the seam, and then it is tightened, thus sewing the torn part of the trousers.

Method 2:

First find the seam of the trousers (like a hot line), and then draw the length. Then draw trouser legs of various sizes on both sides of the middle seam. The back plate is wide, and there are seams to put it on.

Generally, the front piece is cut first, and then the front piece is laid flat on the cloth for cutting the back piece.

Note: the front seam must follow the warp. Never flip the front film casually in order to save materials. On the basis of the front panel, the back panel is widened at both sides, the back waist is tilted and the back door is opened. The front stitching is very important.

Front tappet seam-front pants centerline (i.e. ironing seam) building seam-side seam (i.e. middle seam) front door welt-front crotch seam

Zipper brand double-fold car is good

Zip up the tag and the front car will be fine.

Method 3:

1, from the hole to the lower left 5cm, insert a needle, then to the right of the hole, insert it until 1cm, and insert the needle.

2. Insert the right needle to the left, and insert it to 1cm.

3. Similarly sew the fourth, fifth and sixth horizontal lines until there are no holes at all.

4. Finally, starting from the needle, instead of 1cm, insert the needle downward. Then pick a needle backward, press one needle to the last, draw out the thread, and insert the needle from the bottom of 1cm to the left.

5. Finally, pick a needle backwards, press a needle to the top, pull out the thread, repeat this step to the front, and then sew the hole.