Sometimes, scope creep or change requests from clients are inevitable, especially if the project is complex, long-term, or involves multiple stakeholders. In these cases, you need to be flexible but firm. You need to be flexible enough to accommodate reasonable changes that add value to the project, improve the quality of your work, or meet the client's needs. You also need to be firm enough to reject or charge for changes that are out of scope, unrealistic, or detrimental to the project. You need to balance your professionalism, creativity, and integrity as an illustrator.