My Problem in Using English in Public and How Can I Over Come It….

Hello!! I am a final student at Kolej Poly-Tech MARA, Kuantan. This is my final semester before I do my industrial training next semester. And after that, I will graduate with business management certificate.
Even though, when I speak in public, I always have some problems with my English. Sometimes, I lost my confident when I present or give a speech at public. I always worried if I can’t give a good speech or a good presentation. Every time when I do a presentation, I always felt nervous. I can’t believe that I can do a better compare with my friends. I always felt embarrassed when I want speak English in public although in front of my friends or my family.
Guys, how can I over come it?? Firstly, I need to make a fully prepared before I do a presentation. I must make some research about the topic of my speech. And the important thing is I must practice to using English everyday in my social life, although in my informal talk with others.
I really hope that someday I will be a good speaker that using the excellent English.