The perception that no part of the essay writing process can be "systematized" (i.e. repeated over and over again) is flawed. It overlooks the fact that the structure of virtually every type of essay follows the same format. American high school English classes focus almost exclusively on the content of an essay. Since each essay assignment deals with new subject matter students assume that all essays are different. They dont realize that "topic" is an irrelevant factor. There is very little discussion about the format of a properly structured essay.
As any writer will know they are not the best person to look for any errors or omissions in their work. Read it through certainly pick up some obvious mistakes of course. However being too close to your writing is one of the reasons that book editors exist and of course the same applies to essay writing.
Assistance with the essays format can be vital in ensuring consistency throughout. Therefore your assignment may be improved by managing your heading and text formatting correctly inserting page breaks in the correct places and perhaps adding headers and footers to your work. The end result should demonstrate your essay writing skills to the fullest extent.