Futuristic Fireworks:

1.open a new document 500x500, balck background

2.Filter>Render>Lensflare


3.Repeat step 2 until you have something like this.


4Filter>Distor>Polar cooridinates.
settings:Polar to rectangular

5.Create a new layer.

6.Filter>Render>Clouds

7.Filter>Render>Difference Clouds

8.Image>Adjustments>Auto Levels

9.Blending Mode:Color Dodge

10.Layer>Merge Down

11.Layer>Duplicate Layer

12.Edit>Transform>Rotate 180*

13.Blending Mode:Color Dodge

Heres What your final image should look like:


Heres what this acn look like used in a signature and with some added effects: