To disassemble a Christmas tree, first remove all the decorations and ornaments. Then, carefully remove the tree skirt and place it aside. Next, loosen the screws or bolts that hold the tree together and gently pull the branches apart, starting at the top. Once the branches have been removed, gently lift the trunk and separate it from the base. Finally, fold the tree back into its storage bag or box, and store it in a safe place until next year.