Science Fiction Concept Art

I spend a decent amount of time going through stock photos and sometimes one will catch my eye and spur my imagination. I finally got around to doing this one the way I wanted so enjoy this concept of a launch / railgun hanger concept. The idea behond it is a large cargo mining craft is returning home from another solar system. This hanger is used for launching smaller vessles. The area is contaoned by a suspended plasma grid composited with a vacuum barrier. The original image as you may be able to tell was a subway station. Made in photoshop with some custome brushes and stock textures. Any criticisms welcome :)