First of all, thank you !
I just bought the Dark Series Bundle, everything is amazing. :)
About this particular pack, there is a problem with the "distant animated lightning". If you place it on top of the distant background, it cut the fog.
I managed to use it by moving it a bit on top, but I though it would be good for you to know that.
And if you reupload a version to correct that, I have a demand (I totaly understand if you don't have the time), is it possible to separate the two layers and the fog of the distant background ?