Need help planing a summer wedding and reception please help||?

getting married in august and im having a reception in my backyard ,,i really could use some ideas as far as everything at this point,,i do have 4 daughters and money is tight,,but ,we want a wedding to be nice beautiful and elegant ,,,as far as decorating ideas we are having a pastel colour them ,,so really could use some ideas,,down to setting up to the food buffet ,,please help coming sonn,,