Measure the distance from the floor to the ceiling to get the length needed for your drywall lift. Most ceilings heights will be between 8 feet to 15 feet from the ceiling to the floor.
Take a piece of 2x4 lumber and cut a length of wood on the saw 3 feet in length. Cut a second piece of 2x4 lumber the length of your ceiling height. These will be used to form a T to be used to assist you when holding a piece of drywall into place on the ceiling. Repeat these steps, cutting a second 2x4 the length of the ceiling, which can serve as a horizontal resting piece and another 2x4 piece 3 feet as a vertical hoist. A final piece of 2x4 should be cut 4 feet that will be used join the two T pieces together for your drywall lift.
Using course thread screws, attach the 3-foot piece of 2x4 lumber to the horizontal piece of lumber to form what looks like a T. Repeat this step with the other 2x4 vertical piece of wood and 3-foot vertical hoist piece of 2x4. Join these two pieces of the assembled T form with a 4-foot piece of 2x4 lumber. You now have a lift to use for lifting drywall to the ceiling.