The stuff: a paintbrush, freezer paper, fabric paint, and a plain white t. (Literally, not the group.)
A helpful husband with better scissor-using skills than a kindergarten student (unlike yours truly) is a plus.
The finished product.... perfect for my love of nautical things.
So my lines aren't perfect and it's a little crooked. I'd hate for the work to mistaken as someone else's. I'd put a picture of Merrick's but that would make it glaringly obvious that my own is more than marginally inferior to her perfect results. =)
I won't even attempt to give you directions, but follow Merrick's tutorial and you'll be all set. I can definitely see myself using freezer paper/fabric paint for other projects. It's really fun and cheap and pretty easy (especially if you have any measure of talent in this type of thing, which I don't.) Now go forth and craft! (Wow... words I never thought I'd say/type. There's a first for everything.)