Welcome,
You can decorate the outside of your oven any way you like. The exterior design has very little to do with the functioning or guts of the oven. I think it would be an excellent addition to an "event cetner/farm/garden".
Get started by reading these forums, looking through the photo section and downloading the e-books (free) from the forno bravo store. You have to register at the store and checkout with the books, but they are free.
Instruction Manuals & e-Books :: Forno Bravo Store
Good luck and let us know when you have questions,
Drake