The process of fluffing a Christmas tree involves arranging the branches to create a fuller, more lifelike appearance. To begin, start by gently pulling the branches away from the trunk, working your way around the tree. Once you've achieved the desired fullness, use your hands to smooth out any uneven spots or gaps. Lastly, use a comb or brush to fluff up the branches and create a more natural look. With a little patience and effort, your tree will soon be a stunning centerpiece for your holiday festivities.