Ima tellin you
well it decided I knew how to use my tape and glue and now it is a proper roof for a tower!
make a cone with the tape first. tape untill all peices are supported when you turn it upside down and push the roof peice into place.
now I have to wait for the glue to dry and than I can do the decorating to it....
ohhhh cant tell you...shhhhhhh
but that is how I did my tower.