I got my driving license 3 months ago at the first attempt. All I did was drive safely, give way to as many cars as you possibly can and do not take any risks. I did not budge at the entrance to a signed round about through the light was flashing yellow as I didn't want to take any risks and that is the best way to go on exam day. One lady with me on the car also passed though she was driving too slow in my book. As long as you do not make any immediate termination error on the road like causing other cars to brake sharply and honk hard at you, then nothing to worry about.
A third lady in the car with me failed as she exited left at a roundabout though the lady offer had clearly said u-turn, so make sure you follow instructions carefully and do not hesitate to make the officer repeat them in case of uncertainty. Wish you all the best.