Bring along your last TP paper, where the testers has ticked
your mistakes and show the instructor and ask them where is it
likely to have occured.
The Instructors knows the testers very well, and most likely do
remember the Tester's positions at the Test Rouot and can point out
the likely places where you were penalised.
Then you just need some more practise at the revisions. Like
drilling, do your check backs, change lanes and try to identify
where you might have trouble doing so on your next test date, you
can anticipate where you might have difficulties manuvering the
bike and be slow & relax about it.