I never compared the Aurora to a Sovereign-class, but I do see a trait or two.  The only traits worth noticing being the torpedo launchers near the center of the ventral area of the saucer, actually a Constitution-class trait, but more Sovvie-like due to visibility.  Also, no "neck" area and a secondary hull thinner as you near the end of it.  But still, it's no Sovereign-class.  If anything, the Sovereign should be compared to the 
Aurora due to the Sovvie's retroized design, as it looks out of place in TNG-era Starfleet design lineage.  But I digress...
Here's a pic from that same website Schtupp dug up a couple of pictures from.  It clearly shows the "ball points" of where they are located, reminicient of the aft phasers from the Constitution-class refit.  So far, you're doing a nice job with re-doing your Constitution-class.  The engines in that WIP pic, look weathered and somewhat more-detailed I think, a plus in my book if that's what you intended.  Otherwise, it could just be my eyes need a checkup again.
As I've seen the Aurora WIP pics before, you know how much I like the Aurora. 
