jfiscus said 9 years ago 10/29/2002 1:34:23 PM EDT

Duplicate 'layer set 2' and rename the new set to 'layer set 3'.
Hide layer set 2.

Create a new layer on top of all these layers in the set.
Fill it with white.
Change your selected colors back to the default black/white.
Go to Filter > Noise > add noise
Add a lot of noise.
Go to Filter > Blur > Gaussion Blur.
Change the layer's blending mode to 'Soft Light'.
Adjust the layer's opacity to 50%. (repeat gaussion blur if necessary)

This will give your image the appearance of oxidation or something like that.
It will also blur some sharp features.