If I have stitches, how would I change my bandage?

May need to ask. Be sure to follow the directions you were given, different sutured wounds will require different techniques and some may not need changed for several days. In general use washed hands and be sure the old dressing isn't sticking to either the wound edges or the stitches. In most cases it would be replaced with some type of non stick dressing. If in doubt call whoever put them in!