You already have an outline for the structure of your article. This should take you from the main question, through some of the also asked questions that are relevant to your topic, and lead to answering the unasked question: why did the searcher ask this question?
Answer the Subheads
Now all you need to do is answer each of these subheadings with two or three short paragraphs. Each paragraph should be only a few sentences. Most people are reading your article on their smartphone.
Your sentences should also be short and clear. Long paragraphs are boring, look grey, and people lose interest. You don’t want that.
Ideally, you will want them to stay on your page longer, especially if you will want to monetize your pages with ads. You will want enough spaces between paragraphs for these ads to fit without making your page look crowded.