Well done today!
You did fine on the roundabouts - remember to not go over the white circle on mini-roundabouts, and 'stay in lane' on other ones, even if there are no lane markings.
"- stay closer to the curb when doing a right or left turn"
Get closer to the kerb on left turns, closer to the middle of the road on right turns.
Normal dominant road position to be roughly where the driver is in a car, not the middle of the lane where all the debris is.
One thing we didn't cover (and we hardly did any of these) - when turning right into a minor road, make sure you don't cut the corner and stray into the wrong lane of the minor road.
Well done with the U-turns - practice slow-speed control using the back brake with constant throttle (clutch just engaged).
At least we found where the test centre is, always a useful thing to know! Have fun on Friday.