[Rendello]

You might enjoy Reddit's "constructed orthography" subreddit:

https://old.reddit.com/r/conorthography/top/

Or you can take the plunge and make your own complete script:

https://old.reddit.com/r/neography/top/

And if you're still not satisfied and want to spend the rest of your life making a language that no one else will care to learn:

https://old.reddit.com/r/conlangs/