ok need some feedback on the engine for my kohr-ah planet destroyer i made for act 2 of my animation kinda a bit sloppy because i just got tired of working on the model but it look too bad? put a kohr-ah destroyer beside the planet destroyer for scale.  would a planet destroyer be bigger?

I was trying to imagine how point defense worked and lots of little sticking out lazer banks that could fire in any direction was what i imagined it is a bit much though, maybe less of them, maybe not on the head of the earthling ship. 

I am working on a star control animation which is set right after the end of star control 2.  The kohr-ah want revenge on earth and they are coming after the captian.  I just finished my earth ship today but i have already done around 2 minutes of animation with the kohrah ship in hyperspace blowing up earth probes.  I would like some feedback on my 3d models does anyone think they are good bad ect. could they be improved and how. and the ship on the top is an orz ship.