Warlock transmog - Dark essences

I am planning to at least make one transmog for each class to put on my blog before I show you all of the various priest outfits I've got in store. Today it was the warlocks' turn.

I have always associated warlocks with darkness and green; the kind of sickly green colour that radiates from some items and looks different from the druids' natural green colours. I love how the warlock sets tend to seethe of evil and I wanted to add those elements to this transmog. I think it turned out alright, and you just gotta love this staff.

[Sanctified Dark Coven Hood], Head
[Sanctified Dark Coven Shoulderpads], Shoulders
[Tailgunner's Flight Suit], Chest
[Spellfire Gloves], Hands
[Ruthless Gladiator's Cord of Accuracy], Waist
[Greenweave Sandals], Feet
[Staff of Siphoned Essences], Staff