Astrum Not sure if I'm the right guy to be helping you here, but I'll try 😆
First of all, there are a lot of unnecessary corridors which can be switched out for something more useful. Also, I can see that a lot of the ship is interconnected, try to modulate the ship more, having more separate compartments so that the crew pathing doesn't derp and travel through the entire ship, like they normally do. This is just from what I can see, haven't taken a peek at it in-game just yet, so I don't know what price it's at right now.
If you want to have double shielding, try using a double shield module and stagger them like you have done with the single shields. The thrust doesn't look too bad, and the reactors are well-spaced for where they are put. I'm sure there's points that I've missed, but again this is just what I can see right now. Just start slowly refining the layout.