Redeemer Gunship Exterior

I am a member of Team "Four Horsemen" participating in RSI's "The Next Great Starship" contest. These are some thumbnails and rough sketches I did during the first stage of the contest to establish the design of the Redeemer.

Team "Four Horsemen" is:
Tobias Frank
Paul Dalessi -> http://www.artstation.com/artist/Neuro
David Simon