I honestly think that you have everything planned out when looking at different types of airbase normally they have a bunch of jets and other aircraft’s and shelter to put items inside. However try making the runway have more depth by expanding it a little more, because there’s nothing around and it looks a little early development to receive feedback.
Add more details to the over cover build don’t just feature a plain repetitive look it also has something around the area such as objects trucks and other useful items related to a airbase, I’ll always use reference images to get those important objects and things that are placed inside airbases.
Some different shades of cover buildings would improve the scene make them come in variety of styles with slightly different colors:
i tried adding more details to the runway, added control tower, put fighter jets in, etc.
im not a good builder so the fighter jets are free modeled. sorry
It still doesn’t feature those important details, regarding if your just learning how to build it’s always good to keep improving and see what the end result brings you. But it’s still very large and the areas aren’t filled with aircraft’s and control towers.
The cover options could do with some work as the shape is very bland and repetitive over and over again, despite it’s not a fully done build perhaps include more effort into your little build rather then duplicating buildings and throwing a few “free models”.
Furthermore, I suggest that you use reference images to find ideas to add to your airbase. I feel like once adding those details it’ll improve the quality of the build perhaps include the missing details (control tower, different fighter jets and more). You would be better off learning and practicing that’s a way you’ll become a better builder, try to not rush creating things try replicating a few models within your build.