Good writing is not a matter of following the right rules. Good writing is well thought.
It’s about thinking before writing and being conscious of what you aim to say and to reflect whether what you have written is what you meant.
“Knowing a lot of rules will not help us to write well… What is supposed to be beautifully said, requires to be beautifully thought beforehand; otherwise it will become but empty bombast and wordplay that deceives us.” Karl Philipp Moritz