Does anyone have any tips on how to feel confident before and during oral exams?

I’m going to an oral english exam tomorrow. I’m am not filled with anxiety or anything, but I fear it may come tomorrow. I’m gonna draw a text and then I have one hour to prepare and then the actual exam takes 24 minutes. It’s not an important exam, but I still would like to do it well and feel confident. I hate that annoying nervousness. So, does anyone have any advice or wise words on how to handle this?