Proper left turn
Anytime you want to turn left, you need to get as close and as safe as possible to the corner of the left curb.
A lot of the corners are not sharp 90 degree corners, but curves. Anytime you turn left, you want to nicely follow the curve and position the car in a diagonal position.
Doing this helps you in two ways: You don’t end up in the middle of the road after the turn You don’t need to turn the S/W too much as half of the turn is already made by the nice position of the car on the road.