I put a third hole in to act as a carb, so you can clear the apple of smoke after the burn. i use the top of the apple where the stem comes out as the bowl since it's already shaped that way. so I stab the pen from the bottom of the apple up until it barely pokes through the top to allow smoke to move. then impale the side of the apple to make a tunnel perpendicular to the first tunnel to use as the mouthpiece. just remember to cover that bottom hole with your finger while burning