Here's some friendly criticism.
I'll work backwards lol.
The interior, is awesome. I feel like it's a bit more than concept. Also my take on art is process so I love seeing where artists are coming from and working to so it's nice to see a more fleshed and worked out, 'refined' even, background while the foreground more simple and started.
The beast is really neat. He appears more in the final stages. I don't think he feels quite so grounded yet. I feel like he appears lighter than he is. His back two legs appear grounded fine, it's the foremost that seem less grounded. I think it's a lot to do with lights and shadows, as light has that effect on things :/ .
Overall, it's amazing. As I'd expect from ya