I am trying to get a cover for my novel but no matter what image I use it won't work I asked my AI to generate an image and I specified all the restrictions on the image but it just won't work is there any way I can get a cover for my novel please let me know because as everyone knows without a good looking cover not many people will try the novel can anyone create a cover or get an image that will work if you can thank you :)

Oh and if you need to know the restrictions on the covers it is 800x600px and within 5m and JPG or JPEG those are the limits of the covers size if anyone can help that would be appreciated