Subheadings
After you have copy in your WordPress blog, you need to format it to make it look good.
When formatting your blog, make sure you use subheadings. These should reflect the topic of a particular part of your blog. They work like chapters of a book. They let your reader know what they are going to read.
These subheadings should be either H2 or H3 depending on how important they are to the content and how it looks when displayed.
A lot of formatting is going back and forth between edit and preview mode to see what looks best.