I think it all looks pretty nice! Just a teensy-weensy little thing. In the control room with the chairs, I’d have them moved a little randomly away from the desk. Also, I think the ones on the far left look a little too perfectly fallen. Maybe rotate it around a little bit so it looks more haphazard? Otherwise, this looks magnificent!
The builds look great, but the 4th image, if those right side are pipes, i would suggest changing the material and to the 5th image, i would give that barrel or oil tank some more detail along with the crates? If that’s what it is. Overall they look amazing.