My FIrst Castle

This is my first attempt at a castle cake.The top cake is chocolate and the bottom cake is vanilla.I didnt fill them because i thought it might collapse.The cakes are covered with chocolate buttercream,then fondant.I left the paper towel cylinders inside the turrets to keep the shape.Everything is edible except for the flags and cylinders.It took me a while to do this.There's a few things that I would change next time.