Thank you all for the praises. But you should know that, for me, a lot of the things that are appreciated most here, come randomly in fact, not by mere control. The god rays are a good example: From experience I know under which conditions they are likely to show, so I create these conditions from homemade presets. Then it's a matter of simply pushing the button for random cloud pattern seeds...
The same goes for the textures: Really, I have no clue at times what a certain shader/node is doing and how changing values will lead to what result. I tinker and watch what changes, draw my conclusions and continue working with that conclusion. And sometimes I come to the wrong conclusion...

So don't ask me how I did things, it's a question I can not answer most of the times. If possible I will post a clip- or project file because one file says more than a thousand words, at least for me.