1st follow-up appointment tomorrow!

I'm both excited and nervous for my first follow-up appointment tomorrow. It's been a little over 12 weeks since I had my braces put on and I'm curious to know what the next step is. Will I get a new wire? Am I going to get brackets put on my back molars? Will I get elastic bands? Will they do nothing and send me on my merry way?? I also hope that I have been cleaning my teeth properly as well. I will update you tomorrow on how it goes!