3. Not using mascara if your lashes are sparse. Hey! We weren’t all blessed with naturally lush lashes, ya know? If yours are a little on the short or sparse side (or both!), your makeup mistake is not coating those bad boys in lengthening mascara. Because if we could only pick one beauty staple (other than lipstick) it would definitely be mascara, are we right? A couple coats of this magical stuff and your peepers will instantly look much, much bigger!