If you can read this message, it is probable that the header image is not displaying because your browser does not properly support CSS or you have disabled this yourself.
Although the content looks better with with CSS 'turned on', this site is perfectly readable either way.
A different style of presentation here, focusing on the features of the face.
It is a matter of personal choice for the client, and whatever is most appropriate for the portrait to be done.
All part of the things to think about when planning a portrait.