When I first saw the Alien VHS box at my local grocery store video section... (yes they used to exist) the image disturbed me, but once I had seen the movie and looked at it more, it didn't translate to anything I had seen and it didn't make sense, not even in a cool abstract way.
I think the head could have had more presence if it had been done to larger scale, but since it wasn't it bothers me that these posters give it all this scale... it looks 50 ft. tall in the poster...