Another common mistake I see is the use of “everyday” (one word) when writers mean “every day” (two words). How do you know the difference?
Everyday is an adjective; it describes some noun (person, place, thing or idea). It means daily, ordinary, or routine. E.g., “The Timex was his everyday watch; the Bulova was only for special occasions.” Everyday describes the watch.
Every day refers to something that happens (a verb) each and every day. E.g., “In English class, we have to write every day.” The two words every day refers to when we have to write.
I hope you’ll use this tip every day, and that it will improve your everyday writing.