I got inspired by seeing this done in Clyde's and at a retail store in Old Town, so I took a walk around my neighborhood and gathered all the down branches that I could find. I interlaced a criss-crossing wire (wreath or floral wire) on either side of the ceiling of my balcony, then I guided the branches above them, so that they rest on top of the wire. I then interlaced the branches with white Christmas lights. Here is the result. I am not totally done with it yet, as there are a few extra touches that I have not done yet, but here is the general idea. I think that it is gorgeous!