<human>:  How to do a presentation with a large audience?
<bot>: First, it is important to consider the size and dynamics of your audience when preparing a presentation. You'll need to tailor the presentation to engage and hold the attention of a large audience. That includes speaking loudly, confidently and articulately, and making sure that the presentation focuses on key points and is concise. Additionally, rely on visual aids such as graphs, pictures, and videos that are clear, relevant, and easily digestible. Ask questions to the audience to engage them, and make sure to practice your presentation beforehand to ensure that you feel comfortable presenting it in front of a big crowd.