Looking at film Scripts

To get a better idea of what is needed, I decided to look at other examples of film scripts to see what is usually included. The script I looked at was the script for the film "Hanna"

http://www.focusawards2011.com/workspace/hanna-screenplay.pdf

The first thing I noticed was the amount of detail that is included. I had an idea fixated in my mind that film scripts would just focus on the lines of the characters to each other, however I was surprised to see film scripts include immense detail on the settings, mise en scene and diagetic and non diagetic sounds in the scene. This helped me greatly because I could now use and incorporate some of this into my own script, to help really bring characters to life and communicate my ideas accurately.

As I've began writing my own script, I've began using these details already. An example of this is the opening monologue with the main character Nathan, using the script I wrote exactly where the character was sitting, what it was like, camera angles and shots as well as how long the scene lasted.

"NATHAN (MONOLOGUE)Today is a significant day concerning my current position. I need to -

Sharp, quick cut, long shot, sitting at his kitchen table slurping coffee, background of his kitchen visible.
2 seconds, character looks vacant. "
EDITED: Here is the scene brought to life: