(http://xhatahx.weebly.com/uploads/6/0/1/8/6018829/screenshot-doom-20161014-194201_1_orig.png)
So there's this depression on the ceiling. I originally thought it was pitch black, and wanted to put it in the "General texture issues" thread, but then I decided to fly up there and check for myself. It's the sky.
(http://xhatahx.weebly.com/uploads/6/0/1/8/6018829/screenshot-doom-20161015-083753_orig.png)
The problem is that MMCTF03's skybox is, for the lack of a better term, boring. Maybe add a starry backdrop? And also make the flames bigger?