Who is Sergeant Waters in the present in terms of his views towards African-Americans and race, and what has made him this way? When you quote from the play, make it look like the play. Everything should be in block format, see Files, Quotation Usage.
This is, I believe, a more challenging assignment than your previous ones. You really have to take CONTROL of the essay by devising a strong controlling thesis that will help you structure the essay! Good intro and concluding paragraphs, strong use of structuring elements, transitions and bridge sentences, paragraph development are all very important.