Stadium Construction (non building related)

It's the eldest boy's b'day soon so we are having a party on the weekend.  Her indoors had the idea of doing a cake with some dessicated coconut on it that had been dyed green.  Like this:

She found this design here.

I said that looked great, but I thought I'd add my own touches, you can also tell what team he goes for too now:

I've still got to put ribbons around it and add some balls like the one above but I'll do that before the party.  This is my first attempt at this sort of cake construction and I have another party on Sunday to try to improve on this, maybe I'll just do a brown and yellow football.