As with the metal door, this isn't an image that would be the main subject of a composite photo. It will pair with a main image, but right now I don't know which one. Experimenting to find one is all part of the fun - and occasional frustration! I'll keep you posted...

This is the kind of image I love capturing. It may be OK in its own right as a photo, but I see the potential for it being blended with more conventional images to create something unique. The picture here is of a metal door panel on a new build housing project in London SE13.