a freelance contract must include all the details of the project. when you issue a contract, it’ll include details of the exact amount the client is going to pay you, when that payment is due and also the products or services you are going to be providing your client in exchange for that payment. a contract isn’t just there to protect you as the developer; it is also there for the benefit of the client. a contract isn’t just for the start and the end of a project. now, you send them a piece for feedback and let’s say you have a week’s amount of work to do after the client comes back with the feedback.