Remove four 5.5 mm Phillips #0 screws in the area where the keyboard used to be.

Insert the plastic opening tool into the seam between the top and bottom panels. Using the plastic opening tool, gently pry the top panel upwards until it pops free. Repeat this process along the entire perimeter of the panel.

When the panel is free, grab the edge of the panel that is closest to you and pull it toward you.