Now you should have three lines total. These lines will serve as a guide for you to sew the new hem.

Remove the pins as you go. After you sew around both hems, your jeans will be ready to wear!

If you don’t expect to want to lengthen the jeans at any point, then you can also cut the excess fabric. Cut the excess fabric about 1 inch away from the new seam you have created. [7] X Research source

Make sure to follow the instructions on the label for washing your jeans.

Start by applying very light pressure on the pedal to get the stitches started and then only increase the speed slightly if the fabric seems to be moving along well. If the fabric gets stuck, then you can always use the hand wheel to help move it along.