Why does finish work on a costume really matter? Barring being on stage no one will even see your hem, and that odd ripple is barely noticeable! Who's going to notice some wrinkles, no one has time for that. Let's go over how finishing can polish your outfit and give that one last nudge to perfection. From overlocking/pinking/grading a seam, ironing as you sew, storing and cleaning your costumes there are a lot of ways to costume that don't involve your needle.