Looks nice and accurate, but... What about protecting the underbelly from attacks? This ship doesn't look very agile, and a small fighter squadron will be able to get from below and dig a hole in the hull literally unpunished. Maybe you should add some AM and AA guns to the lower section to cover that design flaw?
Besides, the entire point of battleships is to engage battleships. In a proper fleet, fighters should be taken care of by fighters or specialized AA ships. Not that fighters should be a problem, as they are woefully underpowered as of yet. And again, she's agile enough and has shields that should take at least a ship a good portion of her mass to take down in a realistic combat scenario.
There is a dock for a turret on the bottom, if you want to add something there.
Keep in mind, this is for the most part, my view on sifi naval doctrine. You don't have to agree on it and I won't try to argue it more than I already have.