codes and conventions of a magazinr front cover

I found out by looking at a variety of magazines and comparing them the basic codes and conventions of a magazine front cover.
I found that magazines have

• a unique masthead font
• contain a main image (usually a medium/long shot with a direct address)
• contain sammler images around edge
• contain a main storyline, which links to the main image
• contain a barcode
• contain a price
• the masthead is at the top of the magazine
• have a specific colour scheme
• contain grapghics around coverlines
• usually only 2-3 fonts on the page

I also found that the magazines have a couple of things different.

• differnt target audiences
• some magazines contain cartoon images