Find an image of an old building or brick wall and open it up in Photoshop.
Ill use this image.

Now once your image is open you have to desaturate it (Ctrl+Shift+U) to turn it gray. Once your image is desaturated than go to "Image>Adjustments>Brightness/Contrast" and use these settings "Brightness:-27 Contrast: +84" Now you have a nice grungy look to your image. Now if you dont already have the font "Broken 15" than download it
"HERE". Once your text is typed select it (Ctrl+Click on the layer). Once its selected go down to the base layer (Your base image) and copy your selection (Ctrl+C will copy it)
Make a new canvas and turn the background to White (#FFFFFF) and paste what you copied from your last image.
Your Done, Heres my result.