First draft, then what?

This is a conversation between Writer-in-Residence, Michelle Tan and dramaturg, Juliet Chia, in which they reflect on charting the journey of a play after the first draft. What might the shape and goals of the revision process look like? How does the writer navigate obstacles or detours? What resources does the writer need along the way? When does she know she has arrived at a "final" or "finished" version?