First, you must make sure your essay is organized and logical. The biggest step in ensuring this is to use a thesis statement. One type of thesis statement is a blueprint thesis. This should be placed somewhere near the end of your intro paragraph. They are set up as follows:
Topic+ Stance+ Supports (3=body paragraphs).
For example, your topic is School uniforms (topic). Your required stance is they should not be abolished but should be encouraged (stance) and possible supports would include because they deter theft, reduce bullying, and provide a cheaper alternative (supports).
A typical essay outline looks like this:
I. Intro paragraph with an attention grabbing start, introduction to topic, and a thesis (see bold above).
II. 3 body paragraphs. Each body paragraph should explain and give examples for one of your supports.
III. Conclusion. Remind the reader of all of the good ideas you have just shared and finish with some sort of clinching thought or statement.