My top tip are these 3 letters: MSM (Mirror, Signal, Maneuver)
You can't be too observant. Constantly look in all your mirrors, don't just depend on the rear view mirror.
My other top tip is to stay calm. The calmer you are, the easier it is to remember all the steps in your maneuvers and to keep track of all the rules of the road that you will encounter.
And if you fail, so what? Just book another test. And keep taking it until you pass.
4th time was a charm with me and I feel it made me a better driver.