我有英文唔識做呀

I suggest you to bring a christmas card to the class.

At the presentation, you show it to your classmate.

you can start from this christmas card.

Start like this" This is the very important christmas card to me.
Because it is from my best friend who is in England right now. ...."
You can talk about the friendship between you and him.
How you know him and why he is your best friend.
Finally, you can talk about when and where you are going to meet him in one of the future christmas.

Hope it helps.