the jaws of the pliers around the top of the hinge pin. pull the hinge pin out of the hinge frame in the doorway.
repeat this procedure to remove the hinge pin from the hinge frame at the bottom of the door.
lift the door away from the doorway. lean the door on the wall next to the doorway.
unscrew the hinge frames from the top and bottom of the door with the phillips-head screwdriver. repeat this procedure with the hinges on the doorway.
open up a piano hinge. line up one of the two sides of the piano hinge with the top corner of the door on the side facing you.
screw the wood 