that neck isnt completely flat though, there is a gentle curve on it from the back of the saucer to about half-way down to the impulse vent.
and like he said, it was really hard to represent in my drawings. i spent forever working on the whole neck and top of the engineering hull, drawing and re-drawing trying to get those curves represented well.
I'm really enjoying watching it "come to life" it looks great so far, and keep up the good work!