Often I like to give my photos a different style: vintage, glamour, warm, grunge etc. I took this particular photo in Italy and decided to give it an overlay texture for a more weathered look. First I brought the image up in Corel paint shop pro 9, added a layer (more on layers and blend modes in another post) of a monochrome texture with cracks and lines set to blend mode multiply. I lowered the opacity at this stage. I then used a curves adjustment layer to bring out more of the white and finally added a hatch texture on top.
Here is the before and after photo with the adjustments.