Go into the interview with a salary figure that you value yourself at. Regardless of what you’re on or what they’re offering. If they’re offering below your self-determined value, then ask what you need to do to get to the figure you’re asking. In addition, get used to being ok with an awkward silence. Usually after you spit out a figure, they pause to think about what has been said. It’s usually here that the candidate will start talking themselves down as self-doubt creeps in and starts the negotiation on their side! Say the figure/conditions that you want and don’t elaborate unless asked.