Awesome! I have literally just started hacking up plastic for my own Carnival of Chaos. Are you planning on a plague cart? What model are looking at using?
I currently have no plans on adding a plague cart anytime in the near future, but I was considering using the Empire War Alter or the Vampire Counts Corpse Cart. The former would require a lot more work to remove the sigmarite icons but could look cool with some conversions, the corpse cart needs only a few nurgle symbols to fit in well.Thanks for the comment and good luck with your Carnival!