6. PRACTISE IMPROMPTU SPEAKING
At least once a day stand up, in the privacy of your room, and make an impromptu speech of two or three minutes. Select any subject which interests you. Aim at fluency of style rather than depth of thought.
In these daily efforts, use the best chest voice at your command, enunciate clearly, open your mouth well, and imagine yourself addressing an actual audience. A month's regular practise of this exercise will convince you of its great value.