From a failed attempt to get a decent shot in the woods by moving the camera up and down on a time exposure. (See original below) I duplicated the layer and simply stretched it under transform. I also partly straightened the tree on the right. Then I added some light into the woods with a curves adjustment layer. Filled it with black to remove the adjustment then painted the light back in again with a soft white brush.
The original image taken at 0.4 secs moving camera upwards