Based on this prompt, it looks like you have been asked to find "an" essay online which a student has written about Poe's "The Black Cat" and then do some work in editing and revision, thus hopefully improving your knowledge of the story and sharpening your editing and revision skills.
The link I'm providing is an essay which a student wrote and submitted online. The first thing I always tell students to consider is the thesis. If the thesis is awkward or confusing, the entire paper can head off track. Here is the thesis of this paper:
This paper endeavors to show how the writer has used various images and plot development to create a horrifying and dreadful atmosphere that drawing the reader into the narrators demented and haunted mind.
The core idea is there, but the phrasing is long with lots of clauses. There are also some grammatical errors (narrator's should be possessive and drawing is the wrong tense). I also tell students to avoid referring to "the paper" itself and to instead just say
(The entire section contains 3 answers and 992 words.)