Communicating effectively as a CEO requires building trust and reputation through communications. Appearance accounts for 55% of persuasiveness, voice 38%, and words only 7%. To communicate convincingly, leaders must demonstrate passion, pitch, pauses, pace, projection, and personality. It's important to use positive language like "do", "commit", and "can" rather than negative words. Proper preparation involves understanding your audience and addressing their feelings, motivations, prior knowledge, and potential questions. Leaders must consider their company's consistent messaging and stay true to character across all communications.