Why I do feel nervous infrant of the public and how I over come the nervousness?

Hai everyone...How are you??
Actually, around 2 weeks i didn't anything in my blog and today i want to share with you all about "Why i do feel nervous infrant of the public and how i come the nervousness?". Everyone have a characteristic in their self. I'm feel nervous when i want to present to audience because i feel not confident and maybe i have a negative thinking about my self. Before this, i'm a shy girl and afraid when want infrant to audience. Beside that, it's because environment have a many people see my presentation and i will feel nervous infrant of the public. But i have try to feel cool when come the nervousness and i can too try talk with audience when i feel nervous. It can help me when i'm feel that. Although, i will thinking positive when i'm infrant with audience. When i always present to audience, i feel more to confident to talk with people and also have many idea. It can help me to improve my english language too..