"Ah, yes, that can be a tricky task, but with a little bit of patience and creativity, it can be done. Here's how I would recommend approaching it: first, take a piece of garland and drape it over the top of the tree. Then, starting from the top, begin to wrap the garland around the tree in a spiral shape, working your way down to the bottom. As you go, make sure to overlap each piece of garland with the one below it, so that the tree is completely covered. Finally, secure the garland at the bottom with a few pieces of tape. And