you need to write a thesis in the introduction(
Substance—
--does the essay have something worthwhile to say?
--is there an adequately supported (to include appropriate research) main point to it (a thesis) rather than simply a summary or compilation of things others have already said?
Organization—
--is there a clear beginning, middle, and end?
--are there graceful transitions between major sections of the essay, between paragraphs, and between sentences.
--is the essay logically organized?
--does the essay demonstrate coherence at the sentence, paragraph, and overall levels? That is to say, does a sentence or idea or paragraph logically follow the sentence, idea, or paragraph that comes before it?
Style—
--does the author demonstrate sentence variety and facility in the use of language?
--is the writing clear, direct, and readable? In other words, one doesn’t have to read a sentence or paragraph more than once to understand it.
Correctness—
--is the writing grammatically correct and appropriately punctuated according to the conventions of standard written English? Is it free of spelling errors?
--is the essay in an appropriate (MLA, Chicago, APA) format?
--is the essay free of usage errors and inappropriate word choices?