I kept this image from when I played around with a photo of the moon.
I haven't posted for a long while, thought I would kickstart myself posting again on FM.
To answer the what and how - it was a picture of a full moon. I was playing with some filter demo ... "Veins" as I recall, and it made a cool effect. I then put it through a round with Topaz to get the final look. Weird and whacky in a good sort of way.