This is not final but for now I will be putting this one on hold as I have other projects I really need to get back too.
So here is what I have and one day I will come back and finish it (in colour ).
Vader himself is a image composite (from ANH), the rest are 3D meshes (Stormtrooper by JJ Palamo) and I painted in the smoke, debris and damage on the door way.