Custom screen-printed T-shirts can be a great way to show team or group spirit or to attract attention to your business or organization. But designing T-shirts isn't as easy as it looks, even if you have some experience with graphic design. If you want an extremely detailed design, you may need to talk with a service, like Absolute Screen Printing. But if you want to go the DIY route, take a look at some tips that can help you successfully design a picture or logo that will look great on a custom printed T-shirt.