Hey
@Aidas Patas
The airport overall does not look bad, but I can help you getting your airport more realistic, the one thing I noticed is that you use separated textures and they are not seamless.What software you using for 3d modeling?
If you want some help, contact me here, there is bunch of small things that can make your airport 80% realistic than now and you will be surprised when you see what kind of technique makes your airport more realistic.You can see my current project LWSK in my threads, look the first image than the last, but I dont post any images for now, there is bunch of new things and more realistic objects, everything is changed from that images
Few objects placed randomly just to see them in the simulator, what do you think about them? I can help you about that shadows that gives the object 100% realistic look.