Many students have the anxiety of speaking in public because they are afraid of making mistakes or because they don't have a method to study. Now i will recommend you a very effective method to be more confident. First step: read the test carefully and understand it. Once you understand it, formulating the speech will be easier. Second step: you have to know the most important parts. It is good to know the topic in full, but it is always better knowing the most important things. When you read, ask yourself some questions, like "Why", "Who", "When. Third and last step: repeat everything aloud. You will quickly memorize the speech, and you will be more confident and prepared.