A few steps into the forest I imaged the colors using some vertical shift and horizontal tilt on the film back and some vertical tilt on the lens side. Does the selective focus help to transfer the autumn atmosphere?
Hard to say, my first impression was that it's a picture with a close sharp foreground and a short DOF, but looking closer you seem to have done a great deal with the movements!
Yes, there is a good autumn atmosphere, but if it's due to the selective sharpness is hard to say, perhaps one should need some plain shots to compare with in order to make a fair judgement
(though the magenta tone in the sky isn't really my autumn feeling!)
/Bertil