Many users make notes in the native macOS all of the time and would like to keep their most important note at the top of the list. Well there is an extremely easy way to do this.
When in notes find the note you would like at the top of you list (img.1).
Right click on the note you would like at the top of you list and then left click on 'Pin Note' (img2).
Your note will now be pinned to the top of the notes list (img.3).
An easy way to keep you most important note at the top of your list.