Good writing uses definite, specific concrete language. But we rarely use that phrase in that context anymore. The usage of deals with is so widespread and indefinite that it conveys no clear meaning at all. Good writing omits all unnecessary words. Never make the vehicle bigger than the idea.
Good writing uses a variety of sentence structures and lengths.
Repetition is boring whether its ideas, words or structures. Don't bore the audience with sameness. Good writing relies on nouns and verbs. Some people have the misconception that their writing will be better if they use a lot of descriptive additions. This misconception may come from the elementary and junior high years when English teachers were trying to get their students to write anything beyond the monosyllabic responses generated by bored writers.