Move any furniture that is beneath the crack. Place an old sheet or plastic covering over the floor or carpet below the crack.
Climb a ladder and scrape away the loose texture from the ceiling along the crack to reveal the drywall underneath. Use a putty knife. Using a rag, wipe off any remaining dust from the spot.
Place a cartridge of latex caulk into a caulking gun. Squeeze a bead of caulk along the crack. Moisten your finger with warm water, and neatly smooth the caulk out with your finger. Allow the caulk to dry.
Wipe the repaired area clean of dust. Apply a coat of latex primer on the repaired area.
Hold or tape a small box on the ceiling around the repaired area. Hold a can of aerosol ceiling texture spray about 9 to 14 inches from the ceiling, or at a distance according to the manufacturer's instructions. Using a sweeping motion, spray the texture onto the repaired area.