For national organizers:
Believe in students. Consider them as your equals and trust them. They want to do their best. Be very flexible — don't do something your way just because it’s a tradition: if somebody asks you to change something, listen to them and change it, if that is a better thing to do. If existing rules need to be abandoned, abandon them. Try to accommodate anybody who comes to you. Also, do the national selection only if you want to do it — don't make it your job, make it your hobby since you will likely never get money for this job. Also, never pay money to anybody unless you have lots of money: always find volunteers, invite your alumni to help — they always like to be part of the event.