1. Start out with a new document, any size. Fill the background black. 2. Create a new layer. Take out your airbrush and randomly draw lines on your canvas like so: 3. Go to Filters >> Blur >> Radial Blur and use the settings I show. 4. Repeat this 4 or 5 times to give it a great radial blur. 5. Go to Filters >> Sketch >> Chrome. Use the settings I specify. 6. Go to Filters >> Blur >> Radial Blur and use the new settings that I specify. Now just add a color balance layer and duplicate this layer with blending mode "screen", and you'll have a great 3d background.
