The codes and coventions of a double page spread are:

-Strapline
-Strap quote- Get the readers attentions
-Beggining -Short summary -Stand first
-First letter is larger
-Large image
-Limited use of colour.For example black and red
-Eyecatching colours
-Artists names are highlighted
-Pictures of journalist -By line
-Text in columns
-Page numbers
-Title of article
-Title of magazine