Just be calm and try not to think it is a test, just pretend it's your instructor that's in the car with you. Try not to watch videos or overthink the manoeuvres, that's what I did. I drove the night before my test and started to change the way I drove and it made me perform worse - I stalled for the first time in my instructors car on my test.
Just relax and perform everything slower than you normally would and you should be fine.