Now I will admit I am not much of a sports fan (except for hockey, and even then I just like the fighting). Oh sure I like going to sporting events, because they serve beer, but the actual games and players, meh. I don't hate it, I just could care less. Unless there is taco dip being served, then I will go to whatever football/baseball/curling viewing party you have. Anyway, this rambling preceeds me talking about a cake I did a month or two ago of a Packer jersey. I started off with a quarter sheet, which I filled and stacked.
Then I covered everything in a white chocolate ganache.
Then I made templates for the numbers using cereal boxes (I like to use them printed side down as they are glossy and mostly non-stick).