A most beautiful building Dan! I love the clean, yet detailed look of it. From a personal point of view, i think its perfect as it is. A great shape, not overdone, and a few tiny lights would fill it up just fine. But if you still want to add more detail, you could always try adding some greebles in the empty sockets of the building base. A very fine model! Glad you liked the tut. :)

Rudolf Herczog
Digital Artist
www.rochr.com