Look for the unusual and different. Look for shapes and textures in scenes.
That old window or that door with the paint peeling off may not look like a great image, but come in close and just take a section of it for some great results.
Also, juxtaposing someone looking fabulous against a dilapidated door or window can also make a gorgeous image.
I use this technique a lot on wedding or fashion images.
Beck also runs beginners photographic training courses.