Be an articulate speaker. Your voice is key in this field. You should concentrate on projection, enunciation, and inflection. All of these things will help you deliver your “script” in a compelling nature. Be authoritative in your speech. This will give you credibility with your audience. Read newspapers and magazines aloud. Listen to the best journalists in the field when they speak and try to emulate them.You'll have to speak loudly and slowly enough for people to understand you, but quickly enough to cover everything you have to say in a given amount of time.