Ideas of beauty vary widely, but there are typically a loose set of guidelines that govern basic makeup techniques within given eras. For example, blue eye shadow and red lipstick dominated the WWII era, cat eyes and nude lips were popular in the '60s, the '80s saw an uptick in punky, neon colors for makeup (not to mention bold application), and the turn of the century saw a return to the natural look in terms of makeup trends. But whether you want to adopt a retro look, take on modern trends, or simply look your best every day, there is one thing you have to consider first when choosing eye makeup, and that's the shape of your eyes. Everything from your brows down to your lower lashes will determine the makeup that suits you best. So here are a few tips to compliment every eye shape .