An from StraightGrain shows her method for stitching in the ditch on a waistband. Unlike the traditional method of just using lots and lots of pins (which tends to create an uneven stitch line), she uses a combination of pins and basting to stitch in the ditch with no fuss and with a clean finish.
Click the link below to go to her tutorial:
Tutorial: “Stitch in the Ditch” doesn’t have to be a B****, by StraightGrain
[photo from StraightGrain