You have written a piece for your newsletter! Yes, you are satisfied with it. Maybe it took a while or who knows, it just rolled out of your pen. Whatever happened to you, let it rest for a while.
The well-known ‘sleep on it overnight’ is definitely advisable in this case. And then look at it again, do the sentences run smoothly? Don't you use the same words too often? Reading aloud will help 😉
Look where it can be shorter, if you omit that sentence-can it still be done? Or do you call things double? Take a critical look at your own words and don't be afraid to delete!
Better shorter and more powerful, then more long-winded and boring.