With the recent death of Elmore Leonard, his 10 rules of writing have hit a number of websites. They are short, so I recommend you read them.
The best recommendation in my opinion is his summary one;
“My most important rule is one that sums up the 10: If it sounds like writing, I rewrite it.”
I personally struggle with all the writing suggestions and guides that are out there, finding it a substitution for actual writing. I think thought that quote that it mustn’t sound like writing is key and probably trumps all others. Anything that get’s in the way of a readers enjoyment of the story shouldn’t be there, and you only get that by writing and rewriting a lot.
In the end, you need content to see if any of the rules of writing apply.