Mistake 1: You have an all-one-length cut.
Without layers, your hair won't have that magical, youthful quality that stylists call "movement." Long layers remove weight from the bottom half of your hair so your style can swing and bounce. And while blunt edges accentuate lines in your face, layers have a softening effect. Consider side-swept bangs if you want to make your face look a bit rounder and your cheekbones stronger, says New York City hairstylist Eva Scrivo, author of Eva Scrivo on Beauty: The Tools, Techniques, and Insider Knowledge Every Woman Needs to Be Her Most Beautiful, Confident Self.