I don't know if I will participate or not (have time to work on it or not), but let me confirm a few things.
The deadline is 27 July 2021 right?
To participate in this event (apart from the rules you mentioned above), the next thing that participants have to do is submit their work in this thread, am I right?
It's actually 21st of July but.. depending on participation and if enough people need some more time we can extend it a bit

And correct, you just submit your work in this thread and you are in!
Hope to see what you can come up with
