Keep in mind this is the time to be prepping yourself for the colonization process, a lot like preparing for an interview. What activities have you been involved in that show your ability to work with a team? To lead? To follow? Have an idea of what you can bring to the organization. Doing research on Alpha Phi, having some idea of their organizational values and history is nice (resist the urge to do super research, there is such a thing as too much knowledge
). Read some general recruitment advice threads.
Let us know how it goes.