it would be really good to simulate your test center conditions, I know that If I had, my score would be a different story so here are some ideas:
Buy some really unconfortable ear plugs.
Buy a thin erasable pen.
try to get some kind of paper that you can erase on, legal size.
try not to seat in a very confortable chaiir.
don't use the full 10 minutes on each break.
the best tip, is that if you can visit your test center, so maybe you can see how things are, maybe if nobody is taking the test, you can take a look at how it looks... If you can't visit (I don't know your test center rules) try by calling and asking questions like temperature (if they have air conditioning it can get really cold) amoun of people who can take the test at the same time, etc... also try to ask a friend or somebody else about the test center conditions...
Best Luck!