I passed first time, but that was a while ago, and I think they've got a bit fussier since (theory and hazzard perception certainly have!)
that said, I thought I'd got a major pretty early in my test; as I was turning in on a junction just after a blind corner, someone came round aforementioned blind corner far too fast, so I just did whatever I could to not get hit (dropped it to 2nd and floored it

), obviously I figured this sort of aggressive driving would be a major, so after that I just relaxed and drove around town for the remaining 30 mins, not trying to do it 'right'.
got to the end of my test, and he told me I'd passed. shocked, I asked about the incident on the corner, and he smiled and said "well I had to give you a minor because you were a bit heavy on the throttle, but the way I saw it he was in the wrong, not you."
so I'd advise just that, treat it like any other lesson you have had near to your test: examineer tells you where to drive, you drive there, the less you overthink it, the more natural and confident you'll appear.
another 2 things I know a few people who got caught out on:
- at a stop sign, ALWAYS fully engage the handbrake (it's a major if you don't AFAIK)
- emergency stop test; you really need to react fast, <1 second hesitation is enough to fail you on this