ps. Wiem że z polski jesteś, ale wolę takie rzeczy po eng pisać.

Amazing job! Lighting, shading, city, characters, grass. All of it is great!The only thing I think you could do better is the sky. On the lower half of the pic you get the feeling that there's a beutiful, sunny weather. And on the upper half you have white-grayish sky. Even an addition of the sun would be enough.