Goode Beach garden
A combination of ornamental grasses and westringia would look great in your garden. Adding a small gum tree would be a good idea to create a focal point and add height. The trailing lotus pictured is a great ground cover that would grow quickly and help keep the weeds at bay. I've pinned these pictures to give you an idea of the sorts of plants I am considering and how they may look in your garden. Perhaps also some dwarf whoolly bush?