How To: BSG Weathered Bulkhead?

[bobatrek]

I am looking to reproduce the look of the "wall" in this image (minus the "Battlestar Galactica") as a background for my BSG patches:

And here is a larger image: http://vectorgeek.com/artwork/d/559-2/Battlestar_Galactica_Squadron_by_jerrydmills.jpg

This beautiful image and many more can be found here: http://www.vectorgeek.com

Any ideas?