In this essay, you will first explain why you have chosen to explore this topic for your research paper. What makes this particular aspect of Gilgamesh so intriguing for you?
Next, explain how you plan to work on this topic. What will your thesis -- the point you want to prove -- be? What resources do you intend to use? Where do you expect you will need to go to find the information you will need, and what sorts of sources do you suppose you'll need to consult?
What, finally, do you hope to learn from the research experience? What do you want your readers to learn?