Okay, so I double knotted and it looked horrible. It was way too tight. It bunched up and looked like a basket.

So anyways, I googled how to tie it, and I found out if you tie it the way you tie a balloon, it looks perfect! (Kinda loop it into itself, if that makes sense.) If someone tells me how to post pics, I will post what it looks like! Thanks everyone for your help.