Besides headings, image sections do a great job at splitting up the content in the right places. The main sections of your blog post can be separated by images corresponding to the topic you are writing about.
You can also use block quote formatting to emphasize cited sources.
This is where your text starts. You can click here to start typing. Sed ut perspiciatis unde omnis iste natus error sit voluptatem accusantium doloremque laudantium totam rem aperiam eaque ipsa quae ab illo inventore veritatis et.