If I had to give only four pieces of advice to future Terminale students for the Grand Oral, they would be the following :
Start thinking about the two questions for the Grand Oral as early as September
Have your subjects ready as soon as possible
Practise by repeating your presentations many times, whether on your own, in front of your friends, family or teachers
Remember that the Grand Oral is also a conversation.
Above all, don’t put too much pressure on yourself : the jury is not there to put you down but to see you succeed.