Open the computer's display and lay the computer down on the back of its open display.

Using your finger or a screwdriver, push inside the palm rest release hole (#3 in image 1) to release the palm rest from the tabs that hold it down.

Using a plastic scribe, pry up along the edges of the palm-rest assembly. After the palm rest is no longer attached to the computer via any tabs, try lifting up the palm-rest assembly.