It is almost done!!
Just add a merge from the last VolumeRays and the last Shuffle with the In operation.
A Transform with these expressions in the center fields:

root.SunPos.translate.x
root.SunPos.translate.y

I use this Transform node to adjust the size of the generatedeffect.



Now we are going to merge the color corrected sky with the sun effect.
A Plus merger from our last Transform node (input A), and from our Graded sky (input B).
I also put a flare effect after the sky.





Download the script and images here

--> script
--> images

I hope you enjoy it and learn something!! Thanks to Simon Bronson for correcting this text!
Pau Rocher Castellano
Comments, corrections --> bikura@gmail.com