I liked your work, vartan, being your first game, its very nice.

People, outside of Indie development, really care about theyr money, dogs, children and thigs like this.

Apart from it, you can be sure that people who made unreal or any other game you can imagine, started somewhere in time with very simple projects, and you can be sure your project is far better then many of them ( mine included ).

Put some irregularity, better textures, keep the machinery variation and accuracy, and you will progress this work to a AAA level.

Congrats for your first work.