Thanks for all your comments, I'm really appreciate.
@Ivox: the project is located near my city in the north of Poland on the
Baltic see. it's only a first conception and we want to show that we
can put over 500 apartments in this two 35-floors high towers. we
don't know if the english developer will buy this land, but if so..
I will recommend you
@Bubbaloo: thanks for suggestion. you are right that it will be a lot of
work, but I'll remember this in my future projects.
@Fernando: that's right, the towers are really high, so I think I'll have to
find some big clouds
@Nico: not as good as yours

Thanks very much.
@Martgreg: Thanks
michael.