The best advice I can give is this.................
breathe in
breathe out
repeat often!!!
Seriously.......get lots of rest (drink a cup of chamomile tea before bed), get there (the testing center) with plenty of time to get the feel of the place and relax!!! I, too, was a nervous wreck and studied til I thought my brain would POP!!! I wish you the very best of luck and PLEASE keep us posted on how you did!!
sincerely
ranchwife