Well, I don't like the way Warden's horns look in vanilla Minecraft. They look small, thin, and weak.
I corrected that and made them bigger and more powerful.
I also removed the faces from Warden's heart. I know that it is officially confirmed that these are supposed to be souls, but I cannot accept this concept. Souls are the elements of Nether, to which Warden and his sculk-things have nothing to do. I like to think they are sculk-mushrooms of some kind.