To use a very old example, Gertrude Stein liked to repeat words to make a point. She is famous for saying “a rose is a rose is a rose”.

Some authors love to use metaphors. Everything has to be (indirectly, or it would be a simile) compared to something. “Her rosebud mouth”, for example.

Foreshadows are used by some authors and not by others. I have a distant relative who wrote novels in the late 1900’s, and she would say things like: “Of course, she had no way of knowing that she was totally wrong when she said this.” That’s a foreshadow. They’re not that popular today, but I do know very current mystery writers who use them very carefully.

To get an idea of sentence patterns, look at something like Lord of the Rings. Tolkien liked long, complex, musical (almost poetic) sentences that are lovely when read out loud. Compare that with Kipling, or Jack London, or Hemingway. They wrote short punchy sentences, almost like news reports. That’s a difference in narrative style.

Hope I helped.