Those 3D parchment rosettes are not as hard to do as they look. It is just a matter of cutting out the pattern on a sheet of parchment (or parchment paper), gluing that down to another sheet and cutting that one, and so forth. Each of the horizontal layers is only 3-4 layers glued together, and then they are attached to a parchment or paper cylinder.
Mind you, those folks in the UK make quite astonishing period instruments, and those little christmas trees are a marvel. Mine were always a level or two rougher than that
cheers