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.