As an ex teacher,lecturer, examiner, instructor (flying and ground) and CPL +ATPL holder with first time written passes, the only thing that I would like to add to the excellent advice and encouragement given above is to READ THE F*****G QUESTION when it comes to sitting the examinations and make sure that the instructiions contained therin are followed exactly. I apologise for being so rudely pointed about it, but I say it because of the large number of friends and acquaintances who I have helped in this direction have admitted, on failing, that if they had only read the question properly....... The thing was that these individuals were in the main acaedemically bright, knew their subjects well and had no excuse for failing for this reason. BUT IT HAPPENS!!
DON't LET IT HAPPEN TO YOU!!!
Once again, apologies for shouting.
Best of luck in your exams!
P.P.