The obvious is not to do the opposite of what we advised you to do above. Do not leave the accident scene without calling and talking to the authorities, even if it was not your fault.
Even if it was your fault, do not admit responsibility until you have talked to your lawyers. Yes, even to paramedics, witnesses, and especially police officers on the scene. Let us help you determine that later on. For the moment, you were just in a car accident, and you may still be under a lot of pressure, even if you are not injured badly.
Last, but not least, do not make statements to the insurance company until you have spoken to us.