Open a new file with
696x275 px and
72 dpi. Paint it in the indicated color –
540000. This will represent the background of the site’s header to be.

Take now the next tool

and represent the lowest layer of the site’s header.
Blending Options-Stroke

Give volume to the central panel of the header, by applying the same instrument.
Blending Options-Gradient Overlay
Gradient’s parameters: 
Take the indicated tool now

and represent the window for the Logo and the hero’s pictures.