Maybe try broadening your searches, examples;
'Dredd poster'
'Dredd 2012'
'Karl Urban Dredd'
'Olivia Thirlby Dredd'
'Dredd'
'Smoke Texture'
'Smoke Background'
'Leather Texture'
'Cracked earth texture'
'marble texture'
'steel texture'
And maybe look around for some brushes you can use to spice things up.
ETA, remember, its not just the elements you are using but how you use them, inverting a white marble texture and removing the color from it can give you a totally different feel.