The First of her class. The USS Excelsior NCC-2000 came after the Original Enterprise, but Before The 3rd enterprise (Enterprise-B), in the E-B's Construction, 2 more powerful Impulse Engines were added to it and the Warp Nacelles differed from the actual Excelsior-Class.
I have tried to capture the Round-ness of the Saucer Section in plates(it is only 3-4 plates thick altogether, which was really Difficult to do. =P), without changing the Detail of the Original Plans, the only major differences to the original shape are the Engines, which i feel Personify the Excelsior, in essence They make it feel ALIVE!... Muhahahahaha... *Cough* *Cough*
Enjoy my Excelsior, and i hope you like it.
Flying over head.
Showing the Recessed Deflector dish. 'scuse the Hand. =P
The Engineering Hull.
the Warp Nacelle
The Back with the Shuttle Bay, and the "Bump" in the middle. i don't know what that is yet.