Krzysztof, your pictures are not displaying; you might try reloading them. I'm afraid you will not get too many comments if people have to download your model to look at it, as it takes a little while.

Nice model, beautifully detailed, but I think you can do with better brick textures. The orange one doesn't do your model justice, IMHO. Also, when you have so many edges displayed together, try turning the edge setting (under styles) to 1 instead of 3, so they don't look like one massive edge when viewed from a distance.