Mirrors:
Start by checking your mirrors. Be sure to know what is on your left side if turning left, and your right side if turning right.
Signal:
If turning left or right, let other road users know your intentions by giving a signal in plenty of time. Look out for side roads and avoid giving a misleading signal.
Position:
When turning left, approach the corner on the left side, around a metre from the kerb. Look for the point at which the kerb bends away from you and start to steer left at that moment. Continue to follow the kerb, steering as much as is necessary to maintain a steady distance of around a metre. When turning right, position next to the white centre lines and keep straight until after you have entered the new road. Time your steering so you turn onto the left side of the new road. If traveling ahead at a crossroads, keep to the left when possible. Position towards the right only if you have a reason for doing so.