Edit: My bad it has to do with my Adblocker. Its all good now. Cheers

Super cool! Thank you for bringing this to the world. Kids are gonna love this. I'm unable to get it running on the web demo unfortunately though :( Post image upload, I'm redirected to https://sketch.metademolab.com/canvas with a blank screen with the grid image. Without any error message, it isn't obvious if the issue is with the images I uploaded ( which probably is the case ). Will try the Python library and play around.

PS: That silly dance thingy gif is so hilarious