Don't be nervous! Look at this as a fun challenge that will require polite persistence. It may take more than a few letters to achieve your goals.
I am new to this too, but preparing myself for the long haul and lots of learning (which could be a good thing!).
Starting myFICOs 2013
TU:664 March --> 726 May 25
EQ: 687 on March 6 --> 772 May 25
USAA EX (FAKO): 701 March 27 --> 768 May 26
Original goal (720+ across the board) achieved!