Census - Area 51 fence sign ageing

After yesterday's minor successes with the overall look; today started to concentrate on the fence sign which works as a transition from the Dad & Daughter scenes to the Scientists scenes. Used photoshop and some industrial textures to apply initial ageing. Now with the look looked down, need to go back and produce a displacement map and let photoshop create the displacement - won't be as good as Cinema4D as the shadows won't react to the movement of the camera but shouldn't show as it's quite fast - and this should save a bit of time on the rendering... although if I use my Mac here at home it looks like one frame will take 1 hour to render ...I have 150 frames to render overall ... hmm