Five Essential Film Elements

For a sucessful film opening, you need atleast 5 essential elements in order to make it effective and convincing.

-First you need the film title itself, where is it positioned? It is essential it is used not at the very start of the opening but not at the end (like a trailer), it should come in perhaps after 5/6 titles.
-You need eye catching and intriguing imagery in order to get the audiences attention.
-You need the main institutional detail, the Distributor, (Studio) production company, named jobs and actors in a conventional order.
-You need a slight taste of the rest of the film, which makes the audience want to watch the whole film.
-You need a good soundtrack, relating well to the movie and being relevant to create an effective feel to the movie, what mood is it? Sad, happy etc.
-Don't let the opening sequence drag out, it does not need to show the whole movie, it is not a trailer.
-Don't introduce too many characters, we only need to see a couple.
-You need a unique storyline, not copied from any other film, but can have some aspects from various films, you could say the film is similar to.. a bit like..
-You need to introduce the character, or location, or theme/story or the mood, or essentially all of the aspects.