T-shirt making

Hi,
I want to make a t-shirt for an event but don't know where to go or how to do it...can someone help??
thanks

I have my own designs...for a badge on the front...writing on the sleeve and big print on the back..

This is just an example of a list you get when you search "order T shirt" in Japanese on an internet search engine.

If you're holding an event in Japan, I'm sure you can find someone who can read this list.
http://search.goo.ne.jp/web.jsp?PT

Also, if you search Goole for something like "make T-shirts", you will get lots of English websites that let you make your own T-shirts. Most of them will probably be able to deliver worldwide.