When creating an image, it's important to be clear about what details you want to exclude. For example, if you're having a picture of a duck created, you might want to specify that you don't want the head to be split in half or the body to have two heads. You might also want to exclude the presence of any third eyes or extra bills, as these details could be jarring or unrealistic. Additionally, you might specify colors or scenery that you don't want in the image. For instance, if you don't want a blue sky in the background or green grass in the foreground, be sure to communicate this to the artist or designer working on the image. By providing clear instructions about what you want to exclude from the image, you can help ensure that the final result meets your expectations and accurately reflects your vision.