As a Script Writer, you will need to master following:

• consult with producer
• consult with production director
• create a shooting script
• deliver a sales pitch
• develop script bible
• film production process
• screenwriting theories
• study topics
• summarise stories
• use specific writing techniques
• write dialogues
• write storylines

More generally, a script writer is also versed in:

• consult information sources
• consult with editor
• copyright legislation
• develop creative ideas
• finish project within budget
• follow work schedule
• literature
• manage feedback
• writing techniques

It also helps to know the following:

• adapt a script
• attend read-through
• computer equipment
• manage writing administration
• personal directing styles
• promote one's writings
• write voice-overs
• develop professional network
• give live presentation
• manage contracts
• office software
• types of literature genres