Indeed a very important tip. I'd also add that repeated ideas should be parallel, most commonly when you have multiple list items they should be presented "sim

Indeed a very important tip. I'd also add that repeated ideas should be parallel, most commonly when you have multiple list items they should be presented "similarly", e.g. BAD: Windows is a bad operating system for many reasons: * It is ugly * Unstable BETTER: Windows is a bad operating system for many reasons: * It is ugly * It is unstable OR: Windows is a bad operating system for many reasons: * Ugly * Unstable Another problem I often see is documents or presentations that don't have a coherent narrative, where the ideas presented feel disjointed or random. As much as possible, each sentence should clearly lead to the next one and have a clear relation to it. Each idea should clearly lead to the next one and have a clear relation to it. Where things don't feel related, make sure to explain how they are related. As a simplified example (since this is hard to explain), when talking about a new service you intend to introduce you may talk about things like plans for scalability, reliability, error handling and cost. If you just talk about these things with no relevant introduction, they will feel random, but if you introduce them ahead of time with an overview of the relevant considerations they will feel more grounded. Additionally, you may want to discuss cost after scalability since the ideas follow from each other (maybe even scalability->reliability->cost to explain what we can do for reliability at different scales, and then finally the cost for each scale and threshold of reliability), whereas error handling is usually a technical decision that you may want to separate out to a separate discussion.