Ok, this is my first tut, tell me what you think.

1. Start a new image on Photoshop Size 400x100

2. Click Filter> Render> Clouds


3. Then click Filter> Sketch> Chrome and keep default settings


4. Now Filter> Artistic> Fresco and keep default settings


5. Then Filter> Render> Fibers and change the settings to: Varience-25, Strength-4.0

And you should end up with something like this


Then if you dont think it looks nice, add some colour or something to jazz it up, personally I like it how it is.