Presenting information clearly and effectively is a key skill to get your message or opinion across and, today, presentation skills are required in almost every field.
The greatest advice about presentation is - "Be enthusiastic and honest, and the audience will respond."
Your voice can reveal as much about your personal history as your appearance.
Whether you are an experienced presenter, or just starting out, there should be ideas here to help you to improve.
Preparing for your presentation:
Audience analysis
Content (e.g., clear message; focused on audience’s interests; timely)