I've finally gotten around to finishing this ship. It was basically done back in October, but I had some registries saying NX-81921 as they should, and some others saying NCC-81921. So I fixed those, and a few other things.
It's not incredibly different from the Enterprise F. Slightly less powerful, some hull texture changes and flag color changes just for fun. Oh, and as you can see the deflector is yellow. A little homage to the drydock deflector of the 1701 in ST:TMP.
I'm putting the final touches on the whole thing at this time.