A few hours...but here it is! A semi-noob friendly full tech sig tutorial.
What you'll need:
[You must be registered and logged in to see this link.]deviantART: where ART meets application! - Brushes you like and Tech brushes.
Photoshop.
Tutorial:
Make a new canvas size 450 x 180.
Set foreground colour to black and background to white.
Filter > Render > Clouds.
[You must be registered and logged in to see this image.]Make a new layer.
Then, find some brushes you like and put them around the edges in a white colour.
I used some chaotic ones.
[You must be registered and logged in to see this image.]Make a new layer.
Then do the same but using black.
[You must be registered and logged in to see this image.]Make a new layer.
Add a big interesting white brush in the middle, one that you like.
[You must be registered and logged in to see this image.]Cover the whole canvas with your render and then merge the layers and set them to overlay.
[You must be registered and logged in to see this image.]Add your render on the top
[You must be registered and logged in to see this image.]Once again cover the whole canvas with your render but now go to
Filter > Blur > Motion Blur.
Then set that layer to overlay.
[You must be registered and logged in to see this image.]Make a new layer.
Add some tech brushes on the side make sure they are white and then set them to overlay.
[You must be registered and logged in to see this image.]Go to Layer > New Adjustment Layer > Color Balance
And make it dark, something like this:
[You must be registered and logged in to see this image.]Once again go to Layer > New Adjustment Layer > Color Balance.
And set it to blue, so it looks something like this:
[You must be registered and logged in to see this image.]Make a new layer.
Then use your square marquee tool and select the whole canvas, right click and click stroke.
Set a 4 px width with a white border.
And then select the whole canvas the same way again (On the same layer)
Right click, press stroke and set it to white with 3 px width, but in the drop down menu change the setting to clear.
In the same layer again, select the whole canvas again and click stroke again, and make it a 1px wite border set to normal.
This was my finished product:
[You must be registered and logged in to see this image.]