Does anybody know a tutorial for designing the OS X Mountain Lion background pattern? I am referring to this commonly used background pattern:
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It'll take some tweaking to get the result you want, but you can achieve something similar using the Crosshatch filter:
Filter -> Noise -> Add Noise...
Filter -> Brush Strokes -> Crosshatch...
Screenand reduce the opacity to about 40%
Some fine tuning: I added a Gaussian Blur to make the crosshatches a little less harsh.
If you're alright with it not tiling nicely then you can add a gradient to the base color layer.