To help you begin the writing phase, it is advantageous to split the writing task into three parts: the body, the conclusion, and the introduction. You can do so chronologically or follow your own sequence depending on your personal preference and style.
Using a single basic theme is one method you can employ to guarantee your essay's coherence and effectiveness. It forces you to organize your thoughts and ideas and helps keep the essay focused. Without a theme, your essay will simply look like a haphazard collection of facts thrown together to impress the reader. With a main theme, the essay will have a focal point upon which you will develop the rest of the paragraphs.