you do not need to check your right hand blind spot before turning left your are not going to come into coflict with any thing that is there in fact it is dangerous to do so because while you are looking to the right you are not looking ahead nor can you see the junction you are turning into.
shoulder check and life saver are one and the same and involve turning your head until your chin is above your shoulder.
these need to be done prior to any substabtial change in position e.g. lane change, overtake, going around parked cars.
prior to a change in direction
they are done in the direction you are about to move!.
left turn or move=left lifesaver
right turn or move=right lifesaver
the only exeption to this is when exiting a roundabout because when you exit left or straight ahead you should do a right lifesaver to check the empty tarmac and to make sure someone else isn't trying to exit with you.
a rear observation is only done when the bike is at a standstill never whilst moving e.g. pulling away from the kerb this is done by looking as far round as possible to check the road/vehicles that you have seen in your mirror but as it is difficult to judge speed and distance in a mirror you must physicaly look.
this process does not change whether you are a begginer or an advanced rider.