Grim bro,
the embarrassing point is when you parking there were other car waitting to pass, you don't have much time to check out those screen at all!
If you got time while parking, why not just come out your car and check?
Alternatively, practise this by use "icecream-cone" to used it
I practised a lot and now used to the size and can park my car (passenger-side) very close to the wall or something, 'cause I have to do so very often
