Choose what is the overall point you want to make? That stereotypes of Arabs (and other minorities in the US) have been portrayed for a long time in American movies? That Shaheed points out a new way of looking at this problem or something else?
Once you decide the main point, then draft the body paragraphs to support that main point. When you are done with that, then write the introduction and conclusion, and both can be fairly short.
do not write a film review
just pick some aspects that are related to culture of middle east
and follow the guideline and the rubric. Assuming that the reader watched the film