You should attempt to take photographs of the accident scene as soon as possible after the crash. You might take them the day of the crash, although you may be too hurt to do so. Returning to the scene of the accident is a good idea in order to photograph it and preserve the evidence as it existed at the time of the crash. You may also elect to take video of the scene because those things there at the scene may change over time and it’s important to have them documented.