Dear Hannah,
If you are serious enough about music to be entering the AHS competition, may I suggest that if you plan on a career in music these days, it is absolutely essential to understand the marketplace and how it has changed?
You MUST familiarize yourself with these methods of distribution (and their impact on what you can expect to earn), since CDs are quickly going the way of the 8-track tape. (I have a good friend who currently makes a very good living from CDs alone, but even he says he figures one more year and he won’t be able to sell physical discs at all.)
This is the world you will be living in and you need to start thinking of how you will function there, unless of course you are just entering the AHS competition for fun.