www.freepeople.com <- very fun clothes!
www.80spurple.com <--- super cute clothes!
*=stores you may be able to find at the malls near you
Best of luck finding some clothes. ^-^
Sorry, I didn't know the question was outside of my experience when I clicked to answer, but if the maker of the platform has a website, it's a good bet they may have a tutorial of some kind, and if not them, then some other brand. All I know is that Speedball ink company makes a lot of printing inks for silk screening. Maybe you could find links to sites from there that could help you. Good luck.