I managed to pass my nav flight, so I thought I would share some of my tricks - some of which came from here. I used removable sticky tape to write colour-coded cues for radio frequencies, altitudes, radio calls and transponder/ATIS/QNR and pre-landing checks. I drew five mile circles around all the aerodromes, and five and 10 mile circles around the aerodrome that I intended to land at. That prompted me to notify aerodromes when I was passing close to their pattern, and do landing checks (five miles) and do approach calls where I was landing (10 miles). By doing the call at exactly 10 miles, ETA = T + 7, in my plane. I also coloured the border of the different maps with different highlighters. That enabled me to get the correct side of the correct map easily.
For my destination airport, I wrote the elevation, circuit height and overflying height, CTAF, runway names, and if the circuit was left or right (S or Z - shaped) so I could picture the runway names and dead side as I approached the aerodrome to overfly it. With the heights all written down, I would not have to do maths under pressure. I must say, none of this info is presented this way on electronic displays, so at the moment, I plan on using paper maps for navigation and GPS just to confirm my position. All comments welcome, and the more critical the better - negative feedback is valuable.