Overall i really like it, I personally enjoy nature themed art and i find it a well captured scene. I would have liked more definition on the leaves and textures unless its ment to bee seen from afar, did you mean that?. Also you over did it with the fog but that's my opinion...
was this a really tranquil and quiet place you imagined? that's the feeling i get. There's no leaves flying around or air currents visible in the fog and the river isnt flowing, at least i dont see it flowing ( it's lacking foam or something to show its movement a little bit more). Well it all depends on what you meant to express.
I hope you find this constructive, its the sole purpose of my comment here, keep up the great job, i really liked the technices you used and the feeling it gives.
Also i'm not an artist my self, just a really compulsive observer !