An effective conclusion to a narrative should wrap up the story in a satisfying way for the reader. It should summarize the main points of the story and leave the reader with a clear understanding of what the story was about. One effective way to create a conclusion is to use a call-back to the beginning of the story. This means referring back to an event or theme from the beginning of the narrative in a way that brings the story full circle. Additionally, concluding with a message or takeaway for the reader can add depth and meaning to the story.