Reply covering tall cake

Paula ...

Yes I saw the cake school video I wasn’t real happy about seams. But I may do it. My cake is a 12 inch 5 inches high on bottom,9 inch 8 inches high middle and a 6×6 on top.
The top tier I am going to do modeling chocolate wrap with embossed musical notes and the whole thing with luster dust,the middle tier I am going to do royal icing stencil in all different old time clocks, the bottom tier is Goo.g to be Fondant with embossed stripes with every other strip having luster dust.
The very top of the cake has a hour glass with sand.
This cake is for a highschool band the theme has to do with time past present and future . I hope it turns out good,thanks for your reply