How is the zipper pants turned out, more embarrassing, a trick to teach you to solve.
Needlework
First, sew the zipper to the edge of the pants, from the bottom up, from more to less, the top of the pants with the zipper sewn together. Be careful not to sew too much to the edge of the pants and affect the zipper.
Then fill the stitch, and the last two stitches go back and forth to make a dead knot to prevent the thread from unraveling.
Post cutting
Once you've sewn it up, you're done
Sew the zipper to the edge of the pants, from the bottom up, from more to less, the top of the pants with the zipper sewing. Be careful not to sew too much to the edge of the pants and affect the zipper. Fill the stitch. The last two stitches go back and forth to keep the thread from unraveling. Cut the thread, and you're done
Be careful not to sew too much to the edge of the pants and affect the zipper.