It's the clear envelope with the white label, teal colored tape and red stamps.  If you don't remember what it looks like you can check it out in this post.  I'm pretty excited about the whole thing.  Seeing all the envelopes they've gotten, there isn't much of a chance I will win, but it's still super fun to see something I made on display somewhere.  That's all for now, xoxo, clm.