This might honestly be one of my favorite paintings I've seen. I've never wanted to have any art on my walls, but I actually wouldn't mind falling asleep looking at this. The moon (?) is a nice touch as well, makes the whole a lot more interesting.
Thank you! My head canon is that this "moon" is actually a sphere of mysterious iron-like metal that is capable of levitation. (magic? hell-temperature superconductor? who knows!) Though of course this is mostly an excuse for me wanting both a moon and hellish flames as backdrop.
The green-black things remind me of 'black metal' in Valheim, collected as scrap metal from some goblin creatures. It's now my headcanon that this is what their civilization was like before its collapse. They use fire magic too, which also fits.