While you write

• Good focus on the topic, and how it relates to the discourse (or not, maybe new fact)

• Pick the correct fronting structure, put the main payload at the end

• Factual or irrealis?

• Pick the correct irrealis realisation. What is the distance from the here and now? From the facts? Open? Remote? Mood?

• Speaker or other viewpoint?

• Pick the correct verb, the correct meaning

• Modality

• If relevant, improve to more concise structure that focuses on what’s important

• Pace an argument, shift thematic weight

• Stance

• Precise hypothetical and counterfactual scenarios

When in doubt

• Agreement (change where inflected verb is required)

• Try the word in another sentence (can it be adjective in…)

• For correct structure, if the website is not enough, better to consult CGEL Students introduction: clauses on chapters 10-14, coordinations on chapter 15, info package on chapter 16. Then find the example/rule that best fits what needed need.