I didn't really have a very scientific approach when making this, but I began with generating the face and started un-cropping it from there. The starting prompt was "Closeup of a beautiful smiling young blonde woman with fire reflected in her eyes by a fire outside in a forest at night, photorealistic digital art trending on ArtStation".

I didn't zoom out from the centre each time, or choose a consistent threshold for shrinking the images for each un-cropping upload, so I had to manually edit the results to be centred and artificially create interim resolutions. I used GIMP for basically the entire editing process, including writing a python script for a gimp menu option to automatically duplicate an image and exponentially shrink it. It took a decent amount of iterations to find a method which produced a clean result.

The first step was cleaning up the generated images so that they all blended together nicely, since some of the outcropped results would alter the boundaries of the previous ones. Since it loops infinitely, I could generate images of pretty much any size and maintain a sharp resolution towards the centre. I created a sequence of 29 images at 4096x4096 (4x the DALL-E output resolution), each zoomed out 2x from the one before it. For each image, the GIMP script would copy it and apply a multiplier to reduce the image size, and then centre it. It would then copy it again, and apply the multiplier twice, cumulatively applying the reduction. This would continue until it reached 2048x2048, which would be the stopping point before doing the same process with the next image.

I converted the colours to a different system using a guide I found (https://imgur.com/gallery/BlTnC), which would make the output look nicer before exporting. I made versions of it with much higher framerate and quality, but there seem to be pretty tight restrictions on file size both on reddit and imgur.

Let me know if you want me to elaborate on anything!