some tips for the next jam you host,

don't reveal the theme(s) until start of jam,

be clear and precise when writing the rules, for example the voting/rating portion of the jam is not stated well. are the contestants voting or are there judges?

keep the page clean and nice looking, a way of doing this is having contrasting text from the background, following a theme, and having a nice font for text, header, title, etc.

that's all i got, can't wait for the jam!

Thanks for the feedback! I was wondering if there was an automatic way to announce the themes, but I couldn't find anything so I just did it when I created it. It does help with brainstorming, but I guess there isn't really a good way to enforce people don't start ahead of time. I will try to be clearer on the next one as well.