Considering how to write an essay correctly, it is necessary to give examples of common mistakes:
Mistakes of an organizational nature. These are mistakes that a student makes even before sitting down to work. Ask a family member or friend to help you. Let them control that nothing disturbs you or distracts you (television, desire for tea, unwashed dishes, etc.) Then you will have nothing to justify yourself with, and you will get down to work.
Content errors. This type consists of a purely technical plan for your work.
Mistakes in formatting. All that is associated with errors in the design of your work applies here. Remember that there are criteria for evaluating essays, which include the rules of formatting. Don't worry about formatting before your essay is ready.