correction devoir d'anglais description et analyse

Sujet du devoir

bonjour , je doit corriger un exercice qui consiste a decrire une image et a analyser un slogan ,je n'arrive pas a trouver les erreurs
voici le sujet a corriger:

main aim of his slogan is the young people have to interrogate on what they make to express himself.
the aim also is to incite has to go to join voting register to be able to vote .
this slogan is for a young people so that he can participate has the political live on their country
the relation between the slogan and the picture on this girl with unconventionnal looks is that it is necessary to make its own choices , this girl has chooses this and accepts it , we have to make similar with our choice because in a way to take his responsability

Où j'en suis dans mon devoir

j'ai deja fait corriger la description de l'image , je n'arrive pas a trouver les erreurs dans cette partie du sujet
merci