So, I've just posted two backgrounds to my Chaos cultists, the Khornate one seen here (https://lh5.googleusercontent.com/-UUPekhBG58w/TXzylp82VPI/AAAAAAAAA-w/zjrK2wNiidM/s800/DSC00447.JPG) and the Nurgle one, seen here (https://lh5.googleusercontent.com/-olAjxJKM7WI/ThNg1j3zVPI/AAAAAAAAA-w/CFHj3N1W3iU/s800/DSC00630.JPG). I've got at least two more to do, one for my Tzeentch cultist (a feral world shaman) and one for my Slaanesh cultist (background yet to be determined, though if you have advice, there should be pictures in the P&M forum in a couple days). They'll all be in a roughly similar style, lots of +++ in there and pseudo-official formatting, though a goodly chunk of the Tzeentch one will be "translated" from a poem or ballad, in the style of the Liber Chaotica. Any feedback is welcome!
I meant to comment here when I first read your story, but it appears I forgot.
Anyway, I loved the background storys for you Khornate & Nurgleite (Nurgalian? Nurgalish?) characters, and eagerly anticipate your Tzeenchian instalment!
"There once was a young man called Teach
Who decided to worship Tzeench...."