You need to decide what should come first, second, and so on. Within the essay, and within individual body paragraphs, you can order ideas in various ways. The most common organizational strategies are generalization to specifics, climactic order, chronological order, and spatial order. As an adult writing to an adult audience, you are expected to sound reasonable. As you move from writing for the private you to writing for an audience, you are expected to move toward a more formal tone.
Most audiences expect a tone midway between informal and highly informal.
Your tone should take into account the topic, purpose, and audience. A thesis statement is the central theme of an essay. Because it prepares your reader for what you will discuss, the thesis statement must accurately reflect the content of the essay. Here is a list of basic requirements for a thesis statement. It may briefly state the major subdivisions of the essay's topic.