Here are some tips that will help you become an exchange student. Remember that these won't promis you an exchage, but they help.
Be yourself. They are choosing you for you, and not who they want you to be.
Tell the truth. This shouldn't have to be explained.
These next tips are mainly for the interview (if there is one).
Relax. If you're uptight, and worrying too much, it will look bad. Just let it flow, you have nothing to worry about. They'll either pick you or they won't, it's not the end of the world.
Laugh. Laughing will help you relax.
Think your answers through.
Well, these are all I can think of right now. If you come up with something, and you think that it should be put up here, please don't hesitate to email me. Now you can either go back or you can move forward.