I'm an ex driving instructor so while I haven't yet been through this assessment I did do them myself for a long time.
Remember it's not a test you can already drive so he isn't looking for that more he's looking to see if you are a safe, legal and courteous driver. Sure if you drive with one hand on the wheel and the other on the gear stick he will notice it and probably advise you about it but he's not likely to fail you on it.
I hate using the word fail as its not a test sure if your a complete idiot he will fail you but it's more a test like the maths and English from the assessment. Not a pass or fail but a way of seeing what "level" you are.
Don't drive like an idiot and you'll be fine.
When doing any manoeuvre make good use of mirrors and observations. Don't forget BOB when moving away (Boy On a Bike aka your blind spot check over your shoulder before you move!).
If you haven't driven a van before or can't practice just think of it as a big car because honestly they drive a lot like a car these days.
Set up your mirrors so you can see about the width of two fingers van, and everything else should be road and sky. Pointing them down so you can see the back wheel will help when reversing but useless for everything else and to be honest reduces what you can see when reversing too so don't do it.
Hope this helps
As I say not a test so don't drive like an idiot and you'll be fine.
Edited by ShavedApe (Sat 29-Apr-17 13:26:09)