In this instructable, I'll show how to make a simple metal texture.
Step 1: Too Much Noise!
First of all, fill in your layer with a dark grey. Then go to Filter> noise> add noise, and play around with the settings.
Step 2: Blurry!
Then go to filter> Blur> motion blur. Again play around with the settings, although I normally like a diagonal blur.
Step 3: Light
Now go to filter> render> lighting effects. Tinker with the settings, there is no certain way of doing this.
Step 4: Et Voila!
Your metal texture! Now go ahead and make it fancy!