Creative Website Margins

This is the expanded view of a site design I'm working on. The black rectangle represents normal screen dimensions, the shapes outside the rectangle will be seen if a user views the site in a wider-than-normal frame or scrolls right, left, up, or down. The client is a business consultancy firm whose name evokes flying and sailing - hence the aerodynamic/wing shapes in the margins. I'm trying to break the implied rectilinear space of the web page. (Logo is the work of another designer, all other images are mine.)