Not only making presentation is good practice, but also one of most important skill in 21th century. Because it seems English suits for presentation, why not practice making presentations by using English with teacher, friends, and sometimes your boss? Have you watched TED? Actually presentation can be a kind of fun things to do. I will try to write why presentation is good for learning English.
Presentation is good chance to express your idea. During the preparation, you can learn a lot of vocabularies and syntaxes you want to use. By practicing the presentation as many as possible you will learn them by your heart. And also you can practice pronunciation. If possible, you had better practice with native speaker. He/she can tell you when he/she had hard time to listen to.
You can talk about your own field or sometimes you can have time to make presentation about little bit out of your reach. You can choose topic about what you are passionate. So, once you master the presentation you can use these words in daily. So, when you have chance to make presentation, you should take advantage of it.
Watching TED are good sources of motivation for presentation. If you find you favorite speaker you can copy of his speaking and joking until you master. By doing this you can learn pronunciation and timing, pitch, syntax, and so on. I think for practice at least 100 times to master, at least. By doing this you will have much better listening skill. You can also learn a lot of things just by listening to TED though. The powerful presentation uses the power of everyone in the room. It makes many people take in action. On the presentation you can use everyone’s time in the room.
I also recommend two books one is “Presentation Zen: Simple Ideas on Presentation Design and Delivery (2nd Edition) (Voices That Matter)”. This book gives you motivation to practice more. By reading this, I realized that I am using everyone’s time in the room, so that I need to take seriously and take advantage of it. The other is “Talk Like TED: The 9 Public-Speaking Secrets of the World’s Top Minds” Not only you can learn what top minds think, you can know why they are so eloquent on their talk.
Someone might be afraid of being front of people. I think that is normal. Only thing you can do is practice. And know the material you present as much as you can. Also you need to get used to be shy to speak English as well. Nobody is perfect for presentation and foreign languages.
If you are in English learning group, I definitely recommend you to have presentation practice each other. You can choose whatever topic you want and make presentations for each other and evaluate for each other. When I was ESL class at Univ. of Virginia, teachers gave me checking list for evaluate each other. You will learn a lot English and presentation at the same time by doing this practice. If you need that sheet, please let me know.