I love it when people qoute posts for no reason. Its not like everyone is competing for post count..
Anyway, I think everyone would have a better idea of this build once it is done. All you really have now is a wall.
As for things to work on, make the walls interesting. They're all flat and the only detail you've included thus far is the little transition between colors. Also, as stated before, you're windows look a little wierd. Maybe a different choice in colors would be better.