Honestly, I don't think you're going to be able to shake the nerves entirely.
Driving tests are nerve-wracking situations. So what you have to do, is find a way to
perform in spite of your nerves.
They're not looking for a perfect driver. They only want to see that you're
competent and safe on the roads. Mistakes are allowed. I passed second time
yesterday, and I messed up my reverse round a corner. Almost went into the curb.
That would have qualified me for a fail. Why didn't I? Because I noticed the fault,
slipped the car into first and tried to correct it, not hitting the curb.
Eventually, I gave up and just asked for another go, and my examiner said "Go on
then..." which proves to me that they're not ogres. They're not unreasonable. I got a
minor for my first attempt, but I managed to pass it because I fixed where I went
wrong.
Sometimes, I think if the examiner can see that you're aware of the fault, and are
trying to fix it, they might be more inclined (depending on how serious/dangerous
the fault is, of course) to mark it down as a minor.
I noticed a huge difference between my first and second tests. I was more
nervous for my second-because I placed a greater importance on passing it.
It felt somewhat acceptable/expected that I would fail my first test, but
"unacceptable" to mess it up a second time. Reality is, each test is good practice
for future reference.
If you know where you went wrong, take sufficient lessons to maintain and
improve your standard of driving, the failed tests can be beneficial to you.
My top tips:
1) Forget what the examiner is doing. I know when they're sat there with their pad and pencil, scribbling away, it's hard. There's temptation to peek over and see
what they've put. Don't. It's irrelevant to you. Until the second you pull up in the
test centre and switch the engine off, that pad and pencil do not exist.
2) Even if you make a mistake, don't dwell and assume it's a fail. I attempted to
move off in second gear yesterday IN my test, and boy, was that a juddery
experience! I thought I failed right there. It was one minor, and nothing more
than a silly mistake caused by nerves. Not something I'd usually do at all.
3) Get comfortable behind the wheel. Get your seating right, your headrest right,
the steering wheel correctly positioned. It sounds like common sense, but
the last thing you want to realise on test is that you're sitting too close/too far
from the pedals and it's causing you problems.
4) If you're unsure of the direction the examiner has given, ask. Yesterday, I didn't
know which right turn he meant so I said, "The road the blue car has just gone
in?"
5) They're just people like you. Once upon a time, they were in your shoes, so
they know how it feels. Just remember that.
6) Remember why you're doing it. Get a vision in your head about passing, and
driving independently and just keep working towards that. It helped me when I felt
like quitting.
7) Self-care. Get a good night's sleep, eat a good breakfast, hydrate yourself. The
night before, do what relaxes you and try and not think about the test.
8) Don't give up. Don't make a mistake and think, "Oh, well, that's that done," and then go on to make twenty other mistakes as a result. Mistakes are mistakes. Any
mistake you make can be a minor, a serious or a dangerous depending on the
circumstances of it. So, just because you tried to (like me) move off in second,
and the car juddered rather embarrassingly, doesn't mean it's a serious error or
dangerous. When it happened to me, my first instinct was to run out of the car and throw my hands in the air, screaming. I didn't. I pressed on, and passed.
Good luck!