As a freelancer, how should out of scope project requests be handled to maintain a good relationship, feedback and escrow releasing?

[Btaliat]

It is always better for the freelancers to know better way to handle extra works requested by the clients. If not properly handled, it may prevent the clients from releasing the payment or from giving good feedbacks. You don't need to be harsh with your replies. In fact make sure that you are polite enough as a freelancer. And then talk to them about the additional payment since the request was not covered in the first scope