A good presentation has a clear structure with an introduction, main content, and conclusion. The introduction provides an overview of the main topics. Each slide in the main content has a title and brief explanation of the topic. The conclusion summarizes the overall presentation and its purpose. A good presentation is also easy to read with consistently sized text, section headings in a larger font, and illustrations relevant to the message. An effective presenter is well prepared, maintains eye contact with the audience, and finishes on time.