Work your way around the entire perimeter of the front panel with an opening pick.

Much of the glass around the bezel will break off from the rest of the panel, and will stay adhered to the rear case of the iPad. Work your way past these pieces to free as much of the glass panel as possible.

When you get to the digitizer and (on iPad 4) home button cables, you may find it helpful to cut these cables, rather than risk ripping them out of their sockets and damaging the logic board.

Remove the taped-together glass panel from the iPad. Be careful as this will have sharp edges and may drop pieces of glass. Dispose of safely.