If necessary, remove the tape over the home button on the front side of your cracked front panel assembly.

Gently push the top left corner of the home button up away from the front panel.

Do not push the home button all the way through—you only need to get a corner free, so that you can pry it free with a spudger.

This membrane is very thin. If you feel like you're going to tear the button, apply heat and try again.