Trailer Poster: Editing Background

The first step I had to do when creating my background and making it fit my poster was to upload it. Once I had uploaded it, it uploaded as a very small picture behind the headline. 

I then dragged my picture and made it adapt nicely to the background of my poster. 

I then decided that the blue sky background looked to plain on its own, so wanted to blend something else in with it. I thought that stars would look effective and link nicely with the genre, so I uploaded a star 
background over the top of the blue sky background.

I then changed the opacity of the star background to 40%. This way it started to blend with the blue sky background.

This was my end result.