The traditional order for decorating a Christmas tree is as follows:
1. Hang the lights first, starting at the top and working your way down. This will provide a base for the other decorations to hang from.
2. Place the garlands around the tree, filling in any empty spaces and adding texture to the tree.
3. Next, add the larger ornaments, placing them around the tree and creating a balanced look.
4. Then, add the smaller ornaments, filling in the gaps and creating a more intricate design.
5. Finally, top the tree with a star or angel, completing the look.