Listen mate, never get p*ssy with the driving examiners, they're doing their job, it may be unfair but it's true. If they let anyone pass, we would all live in a world full of crap drivers with crashes every five seconds. I know it sucks having to fail over and over again, believe me, I failed six times and passed on my seventh, due to stupid things. All you have to do is concentrate on the driving itself, nothing else, if you're worrying and glimpsing at the green sheet of doom you won't pass. Also when reversing, you don't need to look at the same spot all the time, just keep observing your surroundings, including mirrors and you'll be fine.