Dude, you are posting in wrong place. You need to post in this thread:
https://bitcointalk.org/index.php?topic=1850855.0
It was made to share big winnings at freebitco.in. Previously they were giving bonus to people who share proofs of winnings, I don't think that this promotion is still active.
And congratulations for your winning. 20$ for free is great prize.