We're submitting separate entries, so it there anything we need to avoid doing  to keep it fair? It's the first time either of us have done a public jam, so I'm not 100% sure how it all works.

Hello!  No, I can't really think of anything.  Just try to make it safe for work.  This is a pretty loose affair, just for fun and practice, to help us all improve our skills.  Hopefully you guys will have fun!