Longtime Lurker, first time posting designs
Here are a few of my personal favorites...
Peregrine Class Star Fighter
Wyvern Class Corvette
Avenger Class Frigate - (Inspired by the Nebulon B Frigate of Star Wars fame)
Halberd Class Destroyer - (Inspired by Admiral Lohengram's Awesome Chimera Design)
Paladin Class Cruiser - (Inspired by Admiral Lohengram's Awesome Yorktown Design)