Thanks for the feedback. I'll lighten up the cannons and try the venting process. I have some other turrets that need touching up too. They are a bit too dark.
This is my first attempt to create a reusable texture for one of my races.
This particular ship was recently modeled by Gundommodfan (previously alexrose). I like it's shape too.
It will be a capital ship in my mod, probably a battleship class.