Hello mate.
As long as you meet the criteria of what is expected in the test and fly within the required tolerances, the examiner won't be concerned which method you use. All you will be required to do is notify the examiner if you need to make a heading, altitude or timing change.
If you send me your e-mail address, I can send you my NAV briefing I used to give to my PPL students. It may be of use to you.
All the best.