Final answer:
An effective conclusion restates the thesis, recaps main points, and highlights the argument's significance, often leaving the reader with a lasting impression or further thought.
Step-by-step explanation:
To create an effective conclusion, Xuan should aim to pull together all key points of the essay, reiterate the main idea without merely summarizing, and provide a sense of closure and finality. It is crucial to restate the thesis statement at the conclusion's start, succinctly recap the main points, and conclude with a statement that underscores the significance of the argument. This might include suggesting further implications, creating a vivid image for the reader, or end with a strong statement that leaves a lasting impression.