Looking on the internet deeply has found these results:

note is the most popular phrase on the web.

note well 1421,000 results on the web	note 12,910,000,000 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
So there are some positive notes as well. Note that well before you die. Note well from whom you get applause; it is the Right wing in this House that has just applauded you. Just notes about how well I think you're doing. Note that well before you die. The Commission notes as well that no aid was granted under the scheme in 2013 or any of the following years. All of his notes are well organized. Note well what you say. I suffer no such insinuations of a child... that not even her own face can clean.	It doesn't look like this phrase is very popular! The search could not find any examples on the internet.

note well

1421,000 results on the web

note

12,910,000,000 results on the web

More popular!

So there are some positive notes as well.
Note that well before you die.
Note well from whom you get applause; it is the Right wing in this House that has just applauded you.
Just notes about how well I think you're doing.
Note that well before you die.
The Commission notes as well that no aid was granted under the scheme in 2013 or any of the following years.
All of his notes are well organized.
Note well what you say. I suffer no such insinuations of a child... that not even her own face can clean.

It doesn't look like this phrase is very popular! The search could not find any examples on the internet.