1. Mascara Smudges
Just about every woman has smudged mascara onto her eyelid or face when trying to apply it, and there's usually not enough time to remove it and start over. The good news is that you don't have to.
All you have to do is get a cotton swab, wet the tip of it with a little bit of makeup remover, and carefully use it to dab the mascara smudge away. Once the smudge is gone, you can put on your eyeshadow and no one will ever realize that you made a mistake.