Need help with the perspective
Hey theunraveler, This is a very complex image, so I get why you are wondering about the perspective before you go too far. I checked your perspective and its correct. The thing is, it's kind of boring and flat. I did a sketch to show you some of the things I would do to add more dimension and interest. Your perspective is telling us that we are looking up at the statures in the cove, so I would push the feeling by making the pillars get smaller as they are moving up and away from us. I don't know if you are using reference for this, but this is what I would do. I also made a few other notes that I hope you find helpful :)
Finish it ? I showed a friend of mine this sketch and we can see the lines visually . Do a finished piece .
It is hard to eyeball it, so either you carefully construct the vanishing point for each recess, or you model this in a 3d program like blender.