Technique: I increased the saturation of the reds to bring out the rust of the drum. I desaturated other colours so the drum would stand out.
I then duplicated the layer and darkened the top one to bring out the clouds and sky before using a layer mask to expose the ground on the bottom layer. After that a simple gradient at the top of the image provided a nice dark effect and finally, I dodge and burned the rust until I was happy. Was that useful?
I used CocoViewX to view my work directory from my Linux box on my Macbook. I was surprised that Finder didn’t display thumbnails and I didn’t want the iPhoto heavyweight when all I wanted was to know which image was which.