Let this be a lesson to all the kids out there: sure, that face tattoo looks narly now. But once you grow older, pudgier and much less threatening it will look very very silly.
It will probably help the poster for that film you have a small part in stand out more though.
In general a like all these little posters for minor characters from the film. As a general rule these types of characters in comedies have to be quickly memorable for something, so the odds of they working as a poster seem high.
And who can not love a poster featuring pretty much just a chicken?