First you have to think what i will expose if you want to show rusting on iron then it will be better close to the subject here i see good exposure maintain.
I saw the water walve and thought there was a picture in it. I wasn't on a rust finding assignment.
The title 'Rusting Away' was thought of on the spur of the moment when I saw that DPR has a title field for each picture. Sorry if it gave you the wrong impression.
Actually, feel free to suggest a better title.