Ancient scene - I could use some feedback from you

[pompomhp]

I have some views just finished yesterday and I feel even I rendered to under 3.0 noise level but they still noise, I also use portal at windows (this post was editted, I added grain) if you guy have any ideas, please tell me, I might change the quality the time. Thank you!

Link full image on https://www.behance.net/gallery/84599371/Ancient-Mood