In the article, "The Tell-Tale Heart," it has some errors that need to be corrected.
1) "was first published," is in the passive voice
2) a comma needs to be added here.... " the gender of the narrator [comma] and other details are left unclear.
3) "been speculated," is also in the passive voice
4) the words "sort of" is a creative language.
5) Remove the comma " veiled secret [no comma] or power.
6) Word choice "Stark Contrast."
7) The article uses a direct quote from the story; it needs to be cited and quoted, "never wronged."
8) This statement is ambiguous, "the old man is a father figure."
9) Punctation: "The victim was an old man with a filmy "vulture-eye[add comma]"[erase comma]."
10) Opinion: "Ultimately, the narrator's feelings of guilt, or a mental disturbance."