completion

• To have something all sewn up

  To have a situation completely under control or its outcome assured.

• Sew up

  To successfully complete, finalize, or secure something, especially a deal, a victory, or a situation.

• Tied up loose ends

  To complete all the small, remaining tasks or details of a project or situation, ensuring everything is finalized and secure.

• Wrapped up

  To be completely absorbed in a task or thought, or to have something brought to a definitive conclusion.

• From start to finish

  This phrase describes the entirety of a process, event, or task, encompassing every moment from its beginning to its completion.

• There's nothing left to do

  This phrase signifies that all necessary actions have been completed, or that a situation has reached a point where further intervention or effort is futile or impossible.