Ok i actualy got this from a fire ball tut but i think it looks better like this
but most credits go to Ghost @ tutorialfx.com
1) open a new document and fill it with black
2) Create new layer and hit d to reset your colors
3)Choose the Eliptical Marquee tool from the tool bar and create a circle,hold shift and make it a perfect circle
4) Filter>Render>Clouds
5) Filter>Render>DiffrenceClouds
6) Hit Ctrl+I this will invert your colors
7) Hit Crtl+L to adjust your levels, move the middle Gray slidder all the way to the right it should look like black and white lightning now
http://img183.exs.cx/img183/597/step73it.jpg8) Hit Filter>Distort>Spherize
Amount=100%
mode=Normal
hit ok
9) Click Ctrl+F this will repete the last filter ( step 8)
10) Filter>Stylize>Find Edges
11) hit Ctrl+I to inverse your colors
12) Time to add color hit Ctrl+U to edit the Hue/Saturation with the folowing settings
Check the colorize box
Hue=200
Saturation=100
Lightness=0
http://img183.exs.cx/img183/2051/step122yg.jpg13) Hit Ctrl+J to duplicate the layer
14) Ctrl+U
Hue=240
Saturation=100
lightness=0
15)Ctrl+E to merge it down
16) repete steps 2-14
17) set the duplicated layers blending mode to linear dodge then crtl+e then Crtl+e
18) repete this process untill you get the desired effect
19) Add a Inner and Outer glow to make it look all perty full
my final result
http://img183.exs.cx/img183/2962/iceball6kl.jpgSecond attempt
http://img183.exs.cx/img183/2420/iceball11pm.jpgsry this is my first tut
and it dosnt always turn out the same sometimes it dosnt look so good