1. Open a new document (any size) and fill it with a clear black background.
2. Create a new layer and create a narrow white rectangle like so:
3. Now using the 'Smudge Tool' and changing the setting values of (strength:50%; Master Diameter:10px) - smudge the layer into something like:
4. Now Duplicate that layer and hold, press 'ctrl and u' - this will bring the hue/saturation window up, were you can change the color of the 'fire' do these values:
5. Lastly set the layer mode to: 'color' and your result should be something along the lines of:
More Tutorials: 
