Don't make these mistakes if you're costuming this year!nHalloween 2020 is gonna be... weird, to say the least. While I'm certainly not going to make the mistake of telling anyone what to do, it's safe to say that most Halloween parties and large gatherings are going to be considered inadvisable this year. That means that people like the ones you see here have the luxury of getting a whole extra year to make sure their costumes are less terrible next year!