We often get asked, “What is the best software to use when designing for t-shirt printing?”. Our standard answer is that one should look no further than Adobe Illustrator
The key thing is, for quality screen printing, we need vector artwork (as opposed to raster artwork made in programmes like Photoshop). We have more detailed help on our artwork guidelines page.
However, web apps improve and there is now a new-kid-on-the-block which may save you from having to splash out on Adobe software. Part of the Aviary suite of online drawing tools, Raven is a free to use vector software which as the video below shows, is a very powerful piece of kit:
Aviary vector icons from mpeutz on Vimeo.