This is an extraordinary piece of Star Wars art. Not basically for it's great, atmospheric drawing style, but for concentrating on an aspect, which was never properly themed in any of the movies - the fascinating technologies. It is really a cool picture, showing Vader's personal interest in his personal fighter. And on the side, it perfectly shows how huge those machines actually are, compared to how small they seem in movies and games.
Well, he definately has the right feeling about this fighter, since it didn't break and saved his life in battle. And you did great with the lighting here. A great piece and surely worth a DD.
Just one question: Why absolutely no description? I would have liked to know, what made you decide drawing this theme, what you personally like about the idea and all such things.