Remember to always get your guard back (If you get them back in some sort of guard before 3 seconds they don't get any points usually, just an ADV), and when you pass to make sure you own the posish before you move on to the next thing. It's as stupid as counting to 3, every time you advance position. But it'll come in handy just in case you can't sub the guy. That same strategy will probably be applied on you.
Play to your strengths and if you get caught in unfamiliar territory, get back to where you're comfortable as quickly as possible.
Have FUN!!! That's something we all lose sight of at some point in time, Competing is a challenge but it also should be fun, especially if you paid for the comp out of your own pocket. When you start having money given to you to compete or pay entry fees it becomes a little more like a job, but you should always remember to have fun!