A sitter will sometimes want to be taken 'naturally'. His idea of being natural 'just as I am, you know' is to sprawl over the furniture. Perhaps he will put his hands in his pockets, sink low in the chair, and expect you to make a good head and shoulders portrait of him. This is an awkward customer to manage. Possibly the best plan is to recommend him to go to the worst photographer he can find . . . or to the peripatetic on the sands or common, who will let him have his own way entirely, so that he pays his sixpence in advance.