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.
As an essay writer your main task is to research and develop a coherent argument, within the quite formal structure of an essay. Grammar, spelling and punctuation are extremely important when writing an essay on a subject which calls for good language skills - English Literature, for example. However, an essay on other subjects also needs to adhere to similar grammatical standards. The rules of grammar exist for a positive purpose, such as ease of communication and to avoid ambiguity, not simply for some arcane reason lost in the mists of time.
Essay assistance is exactly the type of coursework help which students at all levels can benefit from. There is no question of such essay assistance infringing any academic codes of conduct. It would of course be totally wrong for academic writing to depend on outside help, such as ghosting or plagiarism, and strict standards govern the type of essay assistance which can be legitimately offered.
Nevertheless, it is true to say that a student with excellent grammatical standards will hold an advantage over a candidate who may excel in every other way. This is what essay assistance is designed to counterbalance.
Another aspect of essay writing which can be overlooked is that of presentation. The handwritten essay of previous centuries has largely been consigned to history. This certainly creates a level playing field for all academic writing to be presented neatly and legibly. However, not all academic writing skills extend to a good knowledge of one of the standard word processing programs such as Microsoft Word. This is another area for essay services to provide coursework help.
Assistance with the essay's 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.
No-one else could (or should) write your essay for you, in your own style, with your own research. Whether you would be able to write the same essay, to the same standards, without some appropriate essay assistance, is a different matter. Your thoughts and opinions are your own, but words and their accurate use are common to everybody. At the end of the day, you should have pride in your essay. It is what represents you and you alone.