Hit the flag, then simply click on the button for the character you would like to draw. Click to go to the next step. Then, when you're finished, you'll be right back at the main menu, ready (if you want) to click on a new character and learn to draw that guy.
@DittoMaster2 gave me the idea with the project where they share how they draw dragons! The characters are from my comic, the KAG Supers. Read the first chapter here: https://scratch.mit.edu/projects/1068599165 If you want to do a tutorial-type thing, this setup uses sprites with code that you can just duplicate. Once duplicated, the code doesn't even require updating. Check it out if you're interested! All characters and code by me. :)