Lithophane I made using the online lithophane tool, https://itslitho.com/
I had the settings adjusted so it had a width of 100mm, but there's not much fine detail on smaller areas of the image, it was fine for our purposes, though. If wanting more detail, I'd recommend reuploading the image below and scaling it up.
EDIT: I've added two additional models. One of the whole cover and 2 closeups (Large & Small). These new models also have a stand included to improve stability during print, as well as to make it easier to display the finished product.
The author marked this model as their own original creation.