This is a really neat idea that's motivated me to create something on the platform for the first time -- so thank you! Since I've never done it before, I wanted to clarify how game jams work exactly, if each participant can only post one entry or what best practices would be encouraged in general. 

I appreciate the validating reminder that it's okay to start small and an open ended outlet to give it a shot!

Game jams kind of do whatever the jam runner wants, so: go nuts, submit as many as you want. I’d personally focus on submitting one that’s been given a lot of thought over several less thoughtful things personally but that’s not a best practice so much as my advice to you. Good luck!