First, loosen the wheel nuts. Then raise the car.
Remove wheel and place it under the front suspension. Just in case... CAREFULLY turn steering so the caliper faces out.
Insert a screwdriver and push it as a lever. Push the ridge of the pad out, then after there's more room slide it between pads and rotor. ALWAYS push away from rotor or you'll scratch it.
Remove lower screw/pin from caliper and turn it up. Remove used brake pads. MEMORIZE which was inside and out.
The wear warning makes it so it only fits one way. Reassemble (may have to push open the caliper even more) and repeat on other side.