To adjust your mirrors, start with the rearview mirror and position it to give you a clear view of the back window. Then, adjust the side mirrors to eliminate blind spots. Lean your head against the left window and adjust the left mirror until the left flank of your car is just visible. Repeat the process for the right mirror. Ensure that you can see the sides of your car and a small amount of the road behind you in the mirrors. This will help you to drive safely and avoid accidents.