The tall arching green plant Acorus calamus ‘Argenteostriatus’, also called sweet hurry or sweet flag, thrives in damp or boggy soils, making it a good selection for your shallows of the pond edge. Insert a central aspect, for example an alluring marble sculpture, to draw awareness towards your elevated pond. https://www.amazon.com.au/gp/product/B0D5BZZZ7K