How can I speak properly and confidently?

Answer 1

Great question. Keep in mind that your audience wants you to be successful. Practice your speech and speak about things that you know very well and you can see and feel within you.

Answer 2

You will speak confidently if you choose a topic that you understand thoroughly and enjoy. The fear of public speaking overwhelms most people. You can naturally counteract that by speaking about topics that you are excited about and know inside and out. That naturally helps diminish the fear.