When it comes to advertising completed novels, there are several effective approaches to creating engaging and attention-grabbing ad copy. One popular technique is to use contrasting elements to create a sense of drama and intrigue. For example, a promotion could highlight a protagonist who goes from being a loser to a hero or a character with a mysterious past. This type of ad copy creates a strong contrast and surprises readers, making them more interested in reading further. Another effective strategy is to create suspense or conflict by posing questions or contradictions in the ad copy. This can pique readers' curiosity and make them want to find out more. Overall, the key is to create ad copy that captures the essence of the story and entices readers to dive into the novel.