Did you address at least three aspects of the issue you chose?
Does each aspect have relevant and authoritative evidence in support of your point?
Have you included a view that is in opposition to your viewpoint, and have you answered that opposing view, pointing out its flaws in such a way as to refute it?
Edit your paper – look for wordiness, repetition, vagueness, ambiguities. Check the organization of the paper as a whole; make sure each paragraph maintains focus. After you are satisfied that the content of your paper is good, carefully proofread it and correct mechanical errors.