Are you familiar with the challenger system on ART street?
If you make a tutorial, you can enable it!!
It's basically an extra comment section with images.
People can try out your tutorial and post what they made!!

Try it on our official tutorials :)
https://medibang.com/page/if/officialtutorials/

And users tutorialsXD
https://medibang.com/contentsSearch/?tagName=%e6%8f%8f%e3%81%8d%e3%83%81%e3%83%a3%e3%83%ac&tagId=349714&searchCategory=3