Paint Effect

Question

Hello Everyone!
I'm relatively new to photoshop and would like to know how I could achieve this intertwining paint effect...   Please reply fast! Thankss

Answer 1

You have to be a bit lateral in the way you look at and interpret the tutorials.  In fact I used two Render effects to do this:
This shows the layers involved, and the settings for the upper Hue/Saturation layer.
Start with foreground set to the colour you want the marble to be, and background white.
Make a new layer and go Filter > Render Clouds
Use a levels layer to harden up the clouds (bring black and white sliders towards the centre)
Now make a new layer, and fill with 50% grey, and go Filter > Render Difference Clouds.
Open a Levels layer above the Difference clouds, and clip to the difference clouds layer (the left most icon in the properties panel).  Adjust black and white sliders so you get thin white lines on black background.
Select the difference clouds and levels layer, and merge them (Ctrl e or Cmd e)
Invert the resulting layer, so you have black lines on white background
Make a Hue/Saturation layer above, and clip to the layer below. Click on Colourize and adjust settings to suite.  You can use the image above as a guide.
Set the difference clouds layer blend mode to Overlay, and adjust opacity for best effect.
I used Liquify and the Smudge tool on the Clouds layer.  The smudge tool is probably most useful because you can see what is happening in real time.  I think that was everything I did, but ask if you get stuck.
Good luck.
[EDIT]  Just looked at your example again.  I used the Smudge tool at 50%, but if you set it to 100% you would get the long swirls more easily.
BTW  The Difference Clouds bit above is the classic Photoshop way of making Lightning.