Use a T5 Torx driver to unscrew the screws securing the upper component cover and the LCD and motherboard assembly:

Sixteen 4.1 mm long screws

One captive screw

This screw is covered by a sticker. Poke your driver through the sticker to access the screw.

Two 4.1 mm long screws

These screws are covered by stickers. Poke your driver through the stickers to access the screws.