Adobe Illustrator CS2
Adobe Illustrator /Photoshop
Weathered version: I exported the Illustrator file as a tiff, then opened it in Photoshop. I opened a photo I'd taken of a cracked asphalt sidewalk, then dragged and dropped it onto my illustration. I blended the texture into the main illustration using the Multiply filter, then manipulated the transparency until the illustration still dominated but the texture showed through just enough.I changed the background into a layer, then added a layer underneath the illustration layer, and turned the color to brown. I erased some of the illustration layer to let the brown background show through. Then I created some additional distress drawing cracks, highlights and shadows the Dodge and Burn tools. :)