blue windows are ok
one thing that strike me like a thunderbolt when I first look at your design is this,
the part at the back that curves on each side of hull (in front view they looks like this: < > )
The front edge of those part are like paper thin and serve no purpose in space. It just looks wrong. I,d try putting some width there, it would really help the design. Because it’s the only part on the ship that looks odd.
Also just on the middle hull at the back, under those curved “wings”. There is a “white spect highlight”. That area is also very thin hull wise…and would be totally useless for the design…no piece of equipment could fit inside that area…and the plating would not be very strong. The angle of your face in this area also make triangles to show up, you should try getting better face angles (not “twist” the face on 2 different axis at once).
Otherwise, it looks better than when yo ustarted, which is good!