In regards to Vaderios' mock-up on the right, taking into account ImpFighter's preference for seeing the tower (which I can see too, so the Executor doesn't look like a flying arrow) the other thing that can be done is slim down the brighter underbelly area of the Executor to match the angle and perspective of the surrounding SDs.

I would love to see the model they used for this shot, much less to see someone do a drawing or mock-up of how the Executor would look from a front "dead-on" angle.

Something like this?

you may not be able to tell too well from how small the shot is, but here is a perspective image:

there are a lot of odd things going on here:
(1) the tower alignment doesn't match the hull alignment
(2) even the area underneath the Executor is wierd; if you look at the unmolested picture, the extension underneath is not symmetrical on either side
(3) the back tip does not quite make a straight line to the nose - it's as if the area leading to the underbelly extension dips INTO the hull.