This is a difficult question to give a definitive answer. The conclusion should sum up all of the points you have made throughout the body of your essay. Essentially, it should mirror the Introduction while providing closure for the reader.
iwould begin by rereading what you have already written focusing on what you really want your audience to learn from your writing. reword those points in your conclusion and wrap up the paper. Do not simply restate what you have already said. Make sure that your reader understands that this is the end of your essay.