Start from what customers see
Pick the names for features and plans that appear in your product and use only those in every article.
Set the voice in a few lines
Say whether you write you or we, how formal to be and what to avoid. Include two examples of a good sentence.
Standardize the structure
Decide the order: a one-line answer, numbered steps, then notes and related links. Customers learn where to look.
Write steps one action at a time
Each step has one action and starts with a verb. Put the expected result in a separate line.
Decide how to use screenshots
Use them where words are not enough and note who updates them. Out-of-date screenshots hurt more than none.
Keep it short and review it
One page that people read beats ten they do not. Revisit it when the product or tone changes.