There are 4 main key points that you have to follow in order to get a high standard polished folio. These 4 key points are;
Investigating
Planning
Designing and Producing
Evaluating
The page links above has the write up of my portfolio which I achieved a B+ for.
You may use my work In anyway but remember to tell your mates about it.
I hope that this will help you complete your portfolio and achieve an outstanding grade. Good luck with the competition and I hope to see you at the worlds!