<human>:  How do I trim the waistline of my jeans?
<bot>: The best way to trim the waistline of your jeans is to use a sewing machine to make alterations. You can follow the original stitching line of the jeans, or create new ones as per your desired size. If you don't have access to a sewing machine, you can also hand-stitch the jeans along the new lines.