Final

on the point of adjustment layers, At first I was a bit lost, but eventually I got the idea of it. The adjustment layers are good for adding seperate effects, for example: the black area around the edge of the photo, and the brighter area in the middle.
The most useful thing about adjustment layers is that youu can change then at a later time.

I like the green side of the image, but on the blue side the shadow and light lines are less convincing.

Here is the image I worked from