One question and I promise I'll stop asking so many questions. How are you mailing out the F8 and then the finished blocks? This may help other beginners not just me.
From previous experience, I found the most economical I can ship one block is in a legal size letter envelope and pay the additional postage. If I put it in a manila envelope, it's a $1.00 more due to beginning size of the manila envelope. That's using a 5x7 manila envelope.