deferred...now what

<p>Now that I'm going to be competing against roughly 20,000 other students in the RD pool, i was wondering how i distinguish myself in a way that I was obviously unable to in the ED pool.
For example, should i submit a rec from a college english teacher i took a course with?
what do i say in a letter to my regional admissions officer that wont blend in with all the other deferral letters that all say " this is still my first choice, etc" becaus getting into this school means the world to me</p>

<p>also is there something i can do between now and decision time to reinforce my academic passions and passion for columbia?</p>