Green Screening - Poster

My main image will be of Sofie (the dead girl of the film). She will be shown off centre and to the right of her will be an image of a far away moon. In order to do this though I needed to green screen. This means to take a photo with the screne in the back. Cut out the green and add in a different backgroung. This however sounds alot easier than it is. My first task was to understand how the programe that was used for green screening worked... and it was'nt easy. After a while fiddling with the different buttons to experiment on my pictures, I had to look into detail of what I needed to do. Of course this meant I couldnt do my poster as one image, but as many. I had to learn to take out any little fault that might be seen (when not zoomed in), adding shaddows, darkening blood and creating a suitable background, one that wouldnt avert the eye from the main picture.