Four professional marks are awarded in P5 and the short video 'Professional marks – the difference between a pass and a fail' gives some pointers to ensure you are awarded these crucial marks.
It is also recommended that you watch the 'P5 effective study and exam technique' video (access the streaming video if you don't have access to YouTube) all the way through. This covers all of the advice given, as well as further pointers to help you pass P5 – for example, in terms of how best to approach this exam.