Place laptop with fan vent facing away from you.

Use the suction cup to gently lift up the backing on the bottom of the laptop. then use either a plastic spudger or guitar pick.

With a guitar pick or plastic spudger gently open and disengage the clips around the outside.

When the majority of the case is unclicked. Gently but firmly wriggle the panel out of the corners. Since the 13" MacBook pro late 2016 and up use a secure mounting mechanism.

This is where the clips attach to the bottom cover.