Open photoshop, make a document, hit D then go to filter, render, clouds.
filter, render, difference clouds. hit CTRL+F to repeat it..
filter, pixelate, mezzotint. use long stroked.
filter, blur, radial blur: amount:100, Method:Zoom, Quality:Best. Het CTRL+F 2 more times.
Dublicate the layer (CTRL+J) then filter, distort, wave and use the default settings.
Now set the top layer to lighten the hit CTRL+E to merge down.
Now duplicate the layer (CTRL+J) the go to edit, transform, flip horizontal. set the mode to lighten then hit CTRL+E.
CTRL+J, edit, transoform, flip vertical, set mode to light then hit CTRL+E.
Now hit CTRL+U and colors it and your done. There is more to this but the is the easy way,
My results