On test, this exercise is an example of reverse roadside parking. See my photopage for the stages of :
1. Lining up (to start)
2. Moving back straight (till rear ends of cars line up)
3. Turning (steering "so your bum goes into the seat first")
To help with turning, use "LARA": Left, Ahead, Right, Ahead; or remember "-1,0,+1,0"; or "-360°, 0, +360°, 0").
See a shorter video, or parking in a very tight space. And look here if it's hard to know which way to turn the wheel.