Remove the screws from the 11 spots using the aluminum driver with the J00 Philips head provided in iFixit toolkit.

Remove the eight 9.0mm Philips screws along the perimeter of the case.

Remove the three 6.0mm Philips screws from the center of the case.

Some versions may instead have six bigger screws (the four on the upper side of the image, close to the hinge, and two on the sides) and five smaller ones (four at the bottom of the image, where the laptop is thinner, and one in the center).