My facility with words derives from a love of literature and a background in French, teaching English, and editing. Throughout my academic and professional experiences, I have had the opportunity to work on a variety of texts, from academic papers to blogs to web content to novels while respecting English grammar and mechanics within the context of various style guides, including AP, CMoS, APA, and MLA.
Obviously there is a big difference. I actually started with screenplays (with some mild success) partly due to hearing that as long as you have a good story, the grammatical errors won’t be a big deal. Well, that was not true. Maybe if a producer liked the story or I was already established but every contest I entered always came back with feedback about the grammatical errors. Even if I won or placed as a finalist, I always received critique on that. Very little is spelling error, it was more about structure, etc.