It looks like a diaper bag.
http://www.cakedalaska.com/Caked_Alaska/Welcoming_William.html
http://www.lovelytutorials.com/forum/showthread.php?t=4901
http://www.lovelytutorials.com/forum/showthread.php?t=5348
http://oatmeal49.blogspot.com/2012/03/my-first-diaper-bag-cake.html
http://cakesdecor.com/cakes/6055
I would think you would follow the same procedure. A stack of at least 3 layer could be four layers it depends on hight that you would like to have. If you make it short you will not need any support. The rest is just decoration.
I hope one of these links helps you!
Good luck!
CIAO!
Quote by @%username% on %date%
%body%