Many thanks to all of you who have replied!
firstly, I should probably clarify that it is the long briefings/lectures I am having trouble putting together. The short briefings although daunting at first are actually becoming quite enjoyable-I have found that they really are testing my understanding of the flight exercises, in a good way!
I would also like to make clear that in no way am I claiming I haven't been taught HOW to do it in a simple efficient way, I posted because I wanted some advice from those of you who have been through this. The problem lies with me and my own underconfidence about my knowledge base and public speaking! I am more than happy with the level of tuition I get from my instructor, I am getting incredibly thorough groundschool (mainly because the weather has been so unpredictable and we tend to end up in the classroom more often than in the air!).
Once again, thanks for the advice! I will be putting it into practice very soon!