I hopped on board the Threadless train and submitted my first design last week! I participated in their Sony Headphones contest, and even though I didn't win, I'm proud of myself for creating something I like and was confident enough to post.
It was a little nerve-wracking to get it finished in time, let alone put it up to be judged. There were quite a number of great designs I was up against, so it was a fair challenge.
I do plan on participating more, and hopefully win one day! That'd be wonderful.
So, there you have it. My first design. The first of many more to come!