congrats @CaptainB mod 1 is the tough one!
Mod2. Indicators! If in doubt hit that cancel button again!
Speed limits! Nowadays most routes will try find a 20mph area so make sure any time you turn you check for new sign posts.
Roundabouts! As above if you realise you're in the wrong lane just ride it out and go the "wrong" exit. They can't fail you for coming off the wrong exit but they can fail you for moving to a right hand lane.
Lifesavers!! any change of direction or if there's a 2 to 1 lane merge remember to give a little look-see!
It ain't over till it's over! even if you think you've failed just keep breathing and don't give up! unless you've gone full Grand Theft Auto you might not have so don't do something dumb to actually fail on. Also remember the test doesn't end until you're parked up engine off. Don't forget lifesaver/indicators etc in the car park! Get parked and remember to breathe neutral, side stand etc
Good luck!