I think you draw something and then thee other person draws the same thing with you and they share a file with each other to finish the drawing and.....I don’t even know what I’m talking about but I think I’m right

I don’t either

But ok so the first person draws themselves doing something and then they share the file with the other person and they draw themselves doing the same thing but kinda different and the drawing comes as one I guess?

Kinda like this I guess

Idk