You may be nervous before the test, but do try and listen to the examiner's pre-flight brief!
My brief included useful info about his attitude to navigation techniques, (fortunately pretty close to mine), but not strictly as I had been taught.
There was also an anecdote about a previous examinee who had failed trying to bust Solent airspace, despite the examiner asking her twice "where are we now, then?".
Needless to say, during my "unplanned diversion", when he said "where are we now, then?", I took it very seriously. Fortunately, I had spotted the Danger Area, and telling him how I would avoid it cleared the air. In retrospect, a running commentary from me would have been better still.
I think they really do want to pass you if they can.