Okay, update with pic time. The main storm clouds are looking a lot better, but I think there's still room for improvement. I'm not happy with the rain distribution, and generally the way it is looking. Do I lighten it? How can I improve the streaking so it doesn't sort of end halfway between the cloud and ground in some places. Any ideas on that front? Because it isn't far off from being done, if only I could tweak it better. The nodes haven't changed since the last update, but I'll try listing all the settings I've done with regards to setting up the rain cloud distribution. Maybe someone might be able to point out where to change things. But since everthing is connected, I'll try to summarise it as best as I can:
Main storm clouds density shader: Feature Scale 20000, Lead-in Scale 30000, Smallest Scale 10, Octaves 14.
Storm cloud shader: Cloud alt. 3744, Cloud depth 6000, Edge sharpness 10, Cloud density 0.2, Coverage Gamma 0.48, Cloud colour 0.618, Scattering colour, 0.05625
Distance shader: Far dist. 2750, Near dist. 2500
Colour adjust for blending mask: black point 0.5562, white point 0.59,
Rain density shader: Feature scale 3000, Lead-in Scale 30000, Smallest scale 10, Octaves 13, Contrast 2, Coverage adjust 0.2, Stretched on Y coords by a factor of 10.
Rain colour adjust shader: black point 0, white point 0.225
Rain cloud shader: Cloud alt. -100, Cloud depth 3500, Edge sharpness 17, cloud density 0.002, coverage adjust -0.2, cloud colour 0.3562, scattering colour 0.28, Inverted Profile, wispiness 0.5, softness 0.268, usually rendered at around quality 2.
So yeah, any suggestions on how I can tame this rain into something great?