Write the body.
The body of your essay argues, explains or describes your topic. Each main idea that you wrote in your diagram or outline will become a separate section within the body of your essay.
Each body paragraph will have the same basic structure. Begin by writing one of your main ideas as the introductory sentence. Next, write each of your supporting ideas in sentence format, but leave three or four lines in between each point to come back and give detailed examples to back up your position. Fill in these spaces with relative information that will help link smaller ideas together.