It is probably wise to address your opponents’ viewpoint so as not to appear as if you are ignoring their better points. Usually, this happens towards the end of the paper but before your conclusion.

It is usually more persuasive if you reference specific concrete moments/scenes from your media which help to illustrate or corroborate your point.

It is important to have a “so what” factor in your paper. It is one thing to point out a stereotype, but you need to push further. So what? So what effect does a film like this have? Why are the stereotypes there? What affect might they have on the audience? OK, so there are or are not stereo types in the media…so what?