To recap (in written form);
- try using scrapbook layouts to help you with your basic design
- mat and layer your larger background pieces
- work out, and remember, what your focal point is
- use your other elements to help draw the eye towards it
- don't be afraid to cover up some of your beautiful layers
- and try to 'embrace the space' rather than attempting to fill every inch of your card.
ps. As requested here's a photo of the finished card.