This is a very beautiful photograph of the autumn, it really represents it very well! It's the mist that makes the picture so perfect it gives the picture a great atmosphere!
I don't have a lot of critique on this picture, maybe next time you could take a shot in a different position, a bit lower to the ground maybe or from another side. The trees are so perfect straight ahead which you can see very good in this picture.
Maybe the darkness on the trees in the front is a bit too much but that's just a miniscule thing, it doesn't distract from the rest of the picture.
So overall very well done! A great photo which should be seen by a lot of more people