The reasons why I study English

Hello, everybody! My name is Aimad, I am 23 years old. I am from Morocco. Actually, I speak fluent Arabic as it's my mother tongue. I also speak French quite well, in addition to English as the language I'm in the process of learning as a future English Instructor in a specialized school. What I'm interested in is improving my grammar, vocabulary, and, at first place foremost, my speaking. Indeed, I think that my point of weakness is speaking <em>(or "Indeed, I think that speaking is where I need to improve the most")</em>. Whenever I try to speak English in front of a huge audience, I find myself lost between words and my tongue-tied stays blocked.