A couple have asked the question and here is the answer from the GNF.
Yes, the entries are all online, and must be paid by debit or credit card.  Wait for the post card and if you have any questions, call the GNF or your Area Animal Science Teacher for assistance.

Ricky Wheeler
Area Animal Science Teacher
Central Region - Agricultural Education
711 Kite Road
Swainsboro, Georgia 30401
478/289-2549 (o)
478/595-5351 (c)