Layer 1 ( View Image )
Create a normal gradient fill.

Layer 2 ( View Image )
Duplicate the gradient layer and apply filter -> Render -> Difference Clouds 5 times. Set the layer to soft light.

Layer 3 ( View Image )
Duplicate the gradient [layer 1] and set to multiply.

Layer 4 ( View Image ) Download the render pack and choose whatever render you like to use...
Now on to the render, Apply Filter -> Distort -> Radial Blur Zoom 100%. Apply Image -> Adjustments -> Brightness/Contrast: Brightness -100, Contrast -100.

Layer 5 ( View Image )
Another render copy. Apply Filter -> Blur -> Gaussian Blur: Radius 10. Apply Image -> Adjustments ->
Brightness/Contrast: Brightness -100, Contrast -100. Move the layer slightly to offset the shadow.

Layer 5 ( View Image )
Another Render copy. This time simply as standard, Normal.

Layer 6 ( View Image )
Duplicate layer 5 and set to screen.

Layer 7, 8, 9 ( View Image )
Use the Glow Sparks Tutorial to create 3 areas of exploding pixie dust. For light background areas set the layer to overlay. For dark backgrounds keep on normal.

Layer 10, 11, 12 ( View Image )
Use the Airbushing-2 Tutorial to create 3 areas of simple airbrushing. Duplicate each to improve contrast.

Layer 13, 14, 15 ( View Image )
Use the airbrushing-1 Tutorial to create 3 areas of more detailed airbrushing.

Layer 16, 17 ( View Image )
Duplicate the Render Twice, slightly offsetting each. This adds much larger scale to the structures. Use the eraser to rub out the middle unwanted area.

Layer 18 ( View Image )
Duplicate the original gradient layer and carefully erase the central part, so that the image comes through from underneath but fades towards the edges.

Layer 19 ( View Image )
Create a hue/saturation layer colorize with saturation set at 0. Set the opacity to 80%.

Layer 20 ( View Image )
Create a color balance layer.
Highlights: Yellow -66
Midtones: Blue +20, Red +35
Shadows: Blue +15

Layer 21 ( View Image )
Create a levels layer: Red input levels: 0, 1.3, 255

Layer 22 ( View Image )
Create a Brightness/Contrast layer: Brightness +15,
Contrast +25

Final Image