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.