Hello Pascal! I just literally read about your project 2 minutes ago before seeing this post. I have recently started a
small art project for a young person here. Nothing compared to the artists for your gallery of course... But that is another issue. You might want to publish this event in the Meetup section as well.
I've PM'd you about a query, something about coverage, which I hope you might find agreeable. It might drum up support for the event in the coming weeks, and we are huge Bitcoin supporters here.
Good luck!