ok well here we have a sig tutorial which will show you how to do this. i havent seen this background or tut before so im posting it here. i hope you all like.
this is going to be the result

THIS IMAGE IS ONE I MADE EARLIER THE ONE IN THIS TUT WILL NOT BE THE SAME, you have to experiment with colors.
ok so to get started we want a new sig sized image. i made it 400x130, you can choose diffferently. make a new doc. put it to wite background. THIS LAYER HAS TO BE A LAYER NOT A BACKGROUND

1.now go to filter>render>clouds (you have to do this with youre default colors, press D to get them again),2. then filter>render>difference clouds (you may do this more than once to get a better effect)

3.now go filter>render>fibers choose an appropriate setting not too detailed but not too plain.

4.filter>stylize>wind choose METHOD: wind DIRECTION: from the right
5.again filter>stylize>wind METHOD:wind DIRECTION:from the LEFT
it should now look like this:


6.now go filter>artistic>plastic wrap HIGHLIGHT STRENGTH:20 DETAIL:10 SMOOTHNESS:10



7.make a new layer, by pressing CTRL+SHIFT+N repeat steps 1-5, DO NOT do step 6

8. on this layer after repeating all the steps. apply watercolor. by going filter>artistic>watercolor

9.now set this layer to difference. by eihter right clicking and going into blending options and selecting difference or just go to the top of the layers channel and select difference

it should now look like this


now to add some color
10. click on the first layer and then go into image>adjustments>color balance
now these settings are up to youre own liking but to make it like mine for the MIDTONES i set the colors at -81 -34 +40
shadows and highlights are youre own choice. i did include them though.


11. finally select the second layer and go to image>adjustments>hue/saturation
check that the colorize box IS TICKED. now set youre own style. i put it at 58 23 100. this made me a redish fiery color
this is what i have so far


12. now for the render. choose a suitable render and put it on the top of all the layers. set it to anything, tht involves light (eg soft light hard light etc) this depends on youre render and color of youre bg. you can also put it to screen as i did with my bluish one. this one im showing you is with hard light


13. now for the text. you do what you want with this but to get the effect on the first sif i showed you i put the text to outer glow and then added some noise.
well there you go you have a sig


i hope you liked this tut. comments on it are welcomed. id like to know what yo think.