big subject,
it seems a fad item for the world cup so you ain't got long..
publicity, go to a marketing firm that can get you on the telly etc
etc, send samples to magazine and paper editors for the mens magazines
(every single one that is your target demographic) etc etc one may want
to feature it, you have got to be quick though. they will like a
nationalistic fad item for the world cup, buy their May/June issues
will already be taking shape
approach the other t shirt seeling firms (look in the back of VIZ) and
try and supply them wholesale, its probably too late for them to copy
your product, they already have online market presence, less
profit but then less costs too (no website or ads or distribution
issues for you)
good luck, good idea not my cup of tea though
stay in the pink with ciggies and drink!