Your question is Scope Creep and Change Orders. Take a moment with it on the right.
Talk me through your thinking if you like. When you're confident, submit your answer and I'll grade it like a real screen (7/10 or better passes).
Describe your process for managing scope creep and negotiating change orders with demanding clients.
Explain how you identify and document out-of-scope work, assess impacts to schedule, cost, quality, and risk, and communicate trade-offs. Include how you preserve the client relationship while protecting contractual commitments and project profitability.