Most freelancers have run into the dreaded scope creep at some point during their careers. It occurs when you start working on a project that you think is going to encompass one set of parameters, and then what is expected of you starts growing beyond your original understanding.
If the client asks for a minor change to something, your first response may be to deal with it and move on, especially if you have had a good working relationship so far. But what do you do when you continue to get requests to “add this,” “change that,” and “I wonder if you could…”