here's a design i found at www.iamneda.net | I am Neda "Aim for the Heart of Freedom" Design http://4.bp.blogspot.com/_sVS2KM9jBK0/SkB8c2bOlbI/AAAAAAAAAH8/dXyRNN97iek/s400/iamnedagreen.jpg what do you think of wearing a target? there's free design downloads.
You can put this on a shirt in a few ways. 1. If you have access to a screen printing set up, you can screenprint them onto a shirt. You can also make your own screen at home for relatively cheap. Check out this link on how to do that: Cheap (no Photo Emulsion) Screenprinting 2. Iron-on transfers. These can be purchased from Walmart, OfficeMax, Staples, etc. (sorry, I don't know the Iranian equivalent, but basically any office or home supply store should have them, as well as many arts & crafts supplies stores). These are easy to use, and you simply print out the design onto them using a printer and then iron on the design to a T shirt. These are the transfers: [ame=http://www.amazon.com/Epson-S041153-Iron-Transfer-Paper/dp/B00004TS2H]Amazon.com: Epson S041153 Iron-on Cool Transfer Paper: Office Products[/ame] 3. Purchase a design from CafePress: Custom & funny t-shirts plus unique gifts. This is an online service in which you can select a design and purchase it on any sort of clothing product (T shirt, sweatshirt, hat, etc). Cafepress will print the design and ship you the clothing item for $15-20 dollars. Not sure if they do international shipping though. Hope this helps to get the design out!