Film Trailer initial image

Most film trailers have the first image as a green screen as shown as an image below stating that the trailer has been approved to be seen by all audiences by a given company, i included this as it is a typical convention of most film trailers and makes the production look that bit more professional rather than looking like a production that has been created in school which has been my main aim for the project as a whole therefore any conventions i can follow to make it look as professional as possible i will do so that the production can be as professional as possible.