I haven’t used Blender Internal for a long time. Hope u Like it.
Inspiration from Spirited Away.
Wow, I love the atmosphere! Great job. 
Well done. Nice image and athmosphere. Always nice to see that BI has some fans. The Dof /blur effect is a bit over the top for me but it’s a matter of personal taste…
It’s a blast! Only criticism is the top portion of the image looks a bit empty. In the reference image the emptiness was compensated by the glow effect.
I wish blender view port could somehow show how awesome the image is gonna be on render time 
There appears to be too much .jpeg compression going on here, it makes the image look like a somewhat low quality scan.
I agree that it could use some volumetric effect, you also might want to use a real environment because clearing up the banding might expose the fact that it’s inside a dome.