Hi, I am moving it to WIP as I would really like to see it evolve as it has great potential!
Some notes:
-something could be added behind the window - I can imagine some vegetation - the leaves which would be closer to the frosted/steamy glass would appear sharper and get more blurry with distance
-textures: low res stains on the glass, more variation on stones
-models: the plant close to the camera (btw you could use Corona's DOF to blur it so that it wouldn't be so apparent that it's so lowpoly)
-the stones could be scattered, now it looks like displacement, which just looks wrong
Just a little bit more tweaking and I am sure it will be a masterpiece. :)