Basically need a piece of advice to improve my work
You need more contrast. Everything is just kinda gray, and there’s nothing that immediately jumps out. Use color and light more aggressively- don’t be afraid to grab your viewer’s eyes and point them exactly where you want them to look! Most people will glance at any given work for a second at most, and if they don’t see something that catches their eye, they move on. You need to pull your viewer in- try an HDRI, but also add stronger colors, stronger highlights, stronger shadows, and stronger focus. It’s lovely modeling, just give us something to look at
I missing something as reference for size. I dont know if the building is 10m or 100m high.
Would place a vehicle in the scene.
Everything that is already commented and also avoid using white light for sun at sharp angles, atmosphere changes its color to a warmer tone.
Nice work! I’d maybe add some depth of field, but that’s just me.
You make an important point. There is no such thing as pure white light, so add some color to your light as well.