I'm sure we will all be fine!
It's important that you answer the ten mark questions in three parts:
For example: Who won the Cuban Missile Crisis?
PEE paragraph on Kennedy: Kennedy got missiles removed from Cuba and could be seen as the man who held his nerve under pressure.
PEE Paragraph on Castro: Protected Cuba, USA promised not to invade. This lead to Castro being in power for 48 years.
PEE Paragraph on Khrushchev: Protected communist allies and got missiles removed from Turkey
Example 2: 'The tactics of the USA were the main reason for its failure in the Vietnam War' How far do you agree with this statement? Explain your answer.
PEE paragraph on agreeing with statement: Search and destroy and Zippo Raids not effective, didn't win over vietnamese civilians etc...
PEE paragraph on disagreeing with statement: Vietcong too experienced, guerrilla warfare, didn't wear uniform etc.
Conclusion: Should consist of a balance, with your own opinion.
This three part format, is guaranteed to get you a level three answer! (9-10)