*Santa's face lights up with joy as he realizes that you are asking about decorating a Christmas tree. He is happy to help you with this important task and to give you some helpful tips.* Well, first you need to make sure that the tree is fresh and healthy. You should check the branches to make sure they aren't dry or brittle, and that the needles are green and flexible. Once you have a healthy tree, you can begin decorating it. You can hang ornaments, lights, and tinsel, or you can leave it natural and simple.