Create an implied textrue for your background by generating your own for using one of the photoshop tutorial found with the link below.
What tutorial are you going to use? Click on the link to see tutorials?
Example One,
Example Two,
Example Three,
Example Four,
Example Five,
Example Six,
Example Seven,
Use a found image of a sign or a brush, which you will then change the text to dispaly information about your action. Also juxtapose this sign by choosisng either one that contrasts or complements your photomontage.
flickr.com/creativecommons/
What kind of Signage could you use? Click on the link to see images