It's no secret, party balloons have gone big. With a year full of birthday parties ahead – get on the balloon train early with one of the basics. We've got the low down on how to work with those gold mylar number balloons, style them, and step them up a notch. Balloon artist, and all-around party friend, Mary Leishman, shares her know how for happy looking party balloons. She has three better-than-basic ways to use mylar balloons at a party.