Effectiveness of movie posters

I think the Juno poster is most effective because it tells you the basic story without giving away any of the twists. We can see she's pregnant and its tagline gives us a hint about it's story. The poster is also bright and bold so it draws you in.

I think this poster is quite effective because its very blunt about what the story is but it seems very busy. the bright colours are effective too.

I think this poster is not very effective because it doesn't draw you in as much. the colours are all very samey and this does tell us the film is girly but it doesnt stand out in any wat and it doesnt tell us much about the story or why someone would want to watch it.

I think this poster is the least effective because it leaves us with no idea of what the movie could be about and the only thing that stands out is the title. there's no clues on it other than the three awkward looking boys. It does tell us who brings us the movie though which may give dedicated fans an idea of the basic themes.

From this I know that my poster will need to be -
BRIGHT
hinty
not too obvious but pretty blatent without giving too much away
stand out
not too crowded but SOME INFO IS NEEDED