Help with puddles

[h106frp]

Can someone post a typical puddles texture please?

Using Blender I have the basic principle working but my puddles look a bit odd. To test I have just used a mask using white puddles in the alpha layer but I am guessing I should have some sort of grayscale.

I checked out the KRP tutorial but it is broken and the images are missing 

Thanks for any help

[Manu]

Photoshop black and withe color and cloud filter