To generate a title onto an image using DALL-E 3, you need to use a text prompt that describes both the image and the title you want. For example, you can write something like “a comic book cover of a detective solving a mystery with the title ‘The Case of the Missing Diamond’”. DALL-E will then try to create an image that matches your prompt.
https://www.shiksha.com/online-courses/articles/dalle-3-for-free