1, steam ironing method:

First, heat the steam iron, then put the heated iron 2 cm above the sweater, let the steam soften the fiber of the sweater, wrap the sweater with a towel, shape the sweater with a board, then pull the sweater to a suitable position by hand, and finally iron the sweater with an iron.

2, cardboard method:

Cut it into the shape of the original sweater with cardboard, cut off the excess part of the sweater hem, then let the sweater stick up along this shape, and finally sew it with a sewing machine.

3, seam edge covering method:

First, measure the size of the sweater hem, then determine the height to be sewn, and start sewing on the surface of the fabric until it reaches the required height.

4. Take out stitches:

First find the bottom seam of the sweater, then remove the stitches, but don't completely remove them until the sweater looks a little loose from above, and then gently pull it up by hand, so that the length of the sweater can be shortened.