With the opening picks still inside the phone, lift the screen up toward you. Do not pull it off right away, but leave the screen at an angle.
Put the screen down along with the opening picks in order to keep it loose. Heat up the bottom to loosen the adhesive from the back, and the menu button.
Once that is done, carefully pull the screen towards you. Keep an eye on the bottom to make sure that the buttons are separating from the adhesive.