Messages in magazine covers

The messages in Seventeen cover are designed to apeeal to young women in Amercia , but a more crytical analysis can reveal certain thinghs, if we are to understand how magazines shape behavior. So, let's play 7 errors game:

01 - Clothes, hair and make up were chosen for those girls by the magazine.
02 - Advices for - dating - guys are given to these young girls.
03 - Coupons are offered to consumers as indications on what they should buy.
04 - Make up itens are given to readers as incentive to - buy the magazine and - follow the make up 'tricks' they are teaching. 
05 - Reader's stories are used as a negative example, in opposition to the good example (the cover girl).
06 - The model, set as an exameple, is presented as someone who talks minly gossip.
07 - Also, advices are also given on how to make money fast (implying that work should not be a concern to those girls).

Of course, people are not empty-minded to follow everything by the book as a manual instantly. However, magazines are full of texts that people take for granted and accept as truth. If a more 'grown up' magazine informs people, why isn't possible that magazines such as this also convince young readers that that is how they should behave/be? But giving/showing patters are not exclusive from magazines. Ads are also masters of replicating and 'selling' ways of being/behaving, though sometimes they can be controversial. As examples, I've selected a few of them: