the white rocks dont go well with the sand IMO. get some more natural looking river stone (larger and darker colors) and mix it up with the sand. i also say avoid the little "path" pattern you have there as youll never see this in a natural setting.
throw in a few large boulders with some driftwood and youll be good to go!
throw in a few large boulders with some driftwood and youll be good to go!