Get the name, address and contact number of any of the witnesses of your fall. If you got injured at a retail store, make sure you file a slip and fall accident report with the manager. They will then document your narrative of the injury. This will be a valuable proof to represent your accident case. Ensure that you ask for and get a copy of the accident report before you leave the premises. Also, save all or any of the evidence you can get your hands on and keep that item which led you to lose your balance and fall.