@sebst Downvote is from me. Not much content here. It’s too short and skims over stuff in a very general way. Also some of it is not useful for general hackathons, e.g. sometimes a restriction on tech is useful or even the point of a hackathon. You missed out how you chose the subject, how you recruited people, how you wrap up, if this was a series of events, how you chose the challenges. and you suddenly mention ‘rules’.
Also, if you want to promote your own work where others are going to spend their time reading it, maybe spell check it first or re-read it for basic grammar/typos.