Hm...well, your ships either look to flimsy on side view or too disproportional overall (I can live with that one). My best suggestion first would be to imagine the deck arrangement when you draw your ships, and not make strutting less than a deck height (3.5 meters) thick. Also, with fighter type ships, I wouldn't go over 100 meters lenght, and they can go flimsy, for minimizing the target size. Also, you could try to make the Hornet's deflector flow into the saucer underside instead of abruptly going into the sec hulls shape.