Use plain, conversational language. Write in your natural style. Avoid gobbledygook and jargon. Write to be understood, not to impress. Revise and rewrite.
Improvement is always possible.
Your chances of having your article accepted for publication increase to the extent that you write in the third person, not the first person. If your article is geared to a Presbyterian audience, make sure it is clear how and why the subject relates to that audience. Assemble and organize your material. An outline may help. After you have written your first draft, it is good practice to leave it for a time.