Plasma Effect (Sort of) in PS

Hey all,

Was trawling through the tutorial websites/blogs (as you do) and found this one:

http://www.planetphotoshop.com/design-with-alpha-channel.html

Im not intrested in the actual tutorial (even tho its cool)…but one of the original images - the bright orange plasma/firey effect thats going on!

Any ideas/links on how i would go about re-creating this?
Thanks in advance :slight_smile: