Re: Renaissance Class
The ultra-thick neck you're using looks more like a VOY or post-VOY design to me. YMMV.
If you are aiming for more of a TNG or pre-TNG-era design, you might want to examine some views of the Ambassador-class orthos shown here
"The way that you wander is the way that you choose. / The day that you tarry is the day that you lose. / Sunshine or thunder, a man will always wonder / Where the fair wind blows ..."
-- Lyrics, Jeremiah Johnson's theme.