Hover to the left of any of your headings in notes to hide that section. This will help shorten your note and show only relevant info you care about.
Write out the in your heading in your note or template
Highlight the heading text and apply the H1 or H2 heading format
To collapse or expand the sections, click on the arrow to the left of the header.
Bonus Feature: when your headings are collapsed, you can drag n' drop the heading along with all of the hidden text in that section!