Things to include in your backstory

Connection to a faction or guild: It is important for players to include a connection to a faction or guild in their backstory as it helps to provide context for their motivations and actions in the game.
  Planet of origin: The planet that a character is from can help to shape their culture, values, and experiences, and should be included in their backstory.
  Day job: A character's day job can provide insight into their skills and abilities, as well as give them a sense of purpose and identity in the game.
  Family history: A character's family history can provide context for their relationships, personality, and experiences.
  Personal goals and motivations: It is important for players to include their personal goals and motivations in their backstory as it helps to give their character a sense of direction and purpose in the game.
  Past experiences: A character's past experiences can shape their worldview and inform their actions in the game, and should be included in their backstory.
  Special abilities or talents: If a character has any special abilities or talents, it is important to include this in their backstory as it can help to define their role in the game.
  Personal relationships: A character's personal relationships, such as friends and allies, can provide context for their actions and motivations in the game.