Thanks Chip, Victoria and fencerdenoctum,
The presentation went okay, only I carried on too long. The teacher had to tell me to stop so I didn't have the chance to make up a proper ending. I talked about the tea myth, the four types of tea, afternoon tea, coffeehouses and tea gardens. I'm not sure what else mentioned, I mean I hadn't really prepared, so I had to improvise and it turned out a bit chaotic.
I also brought some tea with me to show everyone (Assam Melange, Irish Breakfast, China Kwai Flower Blend and Honeybusch Original), which they seemed to enjoy.