You've seen the photos of celebrities whose powder wasn't blended properly -- the white powder look isn't good. Apply an HD powder with a light hand and a giant fluffy brush to set your makeup. Use a dusting motion, and make sure it's blended all the way.

Never underestimate the power of (properly applied) false lashes. Strip lashes can look obviously fake; instead, choose individual lashes. Get our tips for applying them here.

After you finish your look, lock it in place with a setting spray. This will keep your makeup from fading or melting off your face over the course of the night -- which means the only thing you'll have to worry about is nailing those first-dance moves you've been practicing.