Looks good. i attached a few pictures with Feedback. Hope this helps. :-)

You should extend the mid area.

Red: Change the texture to the ground/dirt texture.
And you should use the ice texture, instead of the glas texture.

Green: Change the texture to gras.
Red: Extend the brush.


Green: Change the texture to gras, again.
Red: Extend the brush, again.

Delete this. This is needless


This area looks really empty, add a barrel or something.

Add sth like a ramp here.

Green: Change the textures to gras.
Red: Extend the brush.

Add a wall-brush here.

The windows should be deeper.