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 realization for the irrealis. What is the distance from the here and now? From the facts? Open? Remote? Mood?
Finite/infinite
Pick the correct verb, the correct meaning from the vocab
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.
If relevant, improve to more concise structure that focuses on what’s important