Thanks for the replies!
I loosely followed this tutorial.
http://spikyratpack.blogspot.com/2014/02/pale-skin-tutorial.html?m=1
The differences between his and mine are the blue mixed with sepia wash, I used only sepia, and patience; he has it while I do not lol I did much less layers than he did.
So I decided on a Khorne (mainly daemons) army, and I’m going for a sort of blanchitsu/aos28 type paint scheme.
This is what I have settled on for my Bloodletters.