Presentation Techniques

Clarity of voice - make sure the audience can hear and understand what your saying. No stuttering and clear speech. Don't speak in a monotone voice.
Clarity of information - make sure the audience knows what the pitch is about. There is no point of doing a pitch if the audience doesn't know what it's about because they won't be interested.
Tone -
Engagement - keep eye contact with the audience so they stay focused and interested. Ask questions. summary at the end.