Scotsonslad,
You should be fully briefed by your examiner on the day of the test and if you are unsure about anything, then ask for clarification.
The examiner is not looking for perfection, no one has a perfect flight, what they will be assessing is if you are operating safety, using the correct technique and trying to operate within the tolerences of the PPL skills test.
Typically you will be required to demonstrate 3 stalls.
1. Fully developed in the clean configuration, recovery either at the fully developed stage or when the examiner says recover, make sure you know what he, she wants.
2. Recovery from the incipient stage in the base to final configuration and in a turn.
3. Recovery from the incipient stage in the landing configuration, straight ahead wings level.
I don't know which aircraft you are using but the majority of training aircraft are pretty docile in the stalling regime, though some like the Cessna 150/152 can drop a wing, which may cause concern but is nothing really to worry about, don't let that aspect phase you, the recovery actions are still the same.
With recovery in the fully developed stall, make sure you keep your ailerons neutral in the entry into the stall and when recovering. As stated before on here, to recover just release that back pressure on the control column (ensuring you hold it central though) until the stall Warner/buffet stops (you have now broken the stall) and simultaneously apply full power (think rudder) , take a brief look at ASI and with sufficient climbing speed look outside and adopt the climb attitude.
What the examiner doesn't want to see is
1. use of aileron close to or in the recovery from the stall.
2. Pitching down far too much (looking at the ground) and so loosing too much height
3. recovery via instruments rather than looking outside.
Demonstrate to him/her that you can safely recover from a stall with not too much height loss and you will get a tick in that box of the test.
Good luck
