Any advice in general?
Be yourself! Colleges want to learn about YOU. Do them prior to the last minute (This is a must). Finally, double and triple check for any mistakes. Then find something to do. You have a lot of waiting ahead of you.
My #1 tip: Do your research.
Don’t be that kid who applies to a bunch of top 20s and gets rejected from all of them. Seriously. Have a good amount of safeties that you’d be happy to go to.
Take a look at the total process, then break it down into steps needed to advance the completion of the process. Make a list - or spreadsheet - (don’t know if there is an app for that!) of what needs to be done & when it needs to be done. Ask lots of questions as you go along, and talk to parents, and/or GC/and or Fav Teacher early and often. Start early, have fun, and good luck!