Here is how this game works, and know that it uses the picture embedding feature here.
A round robin is where people create a story, one sentence at a time, one picture at a time.
This is the picture version of that.
How it works is someone posts a picture of a line, and each replier adds a new line/stroke until a comprehensible line picture is made from it (or more than that, since even after a picture is comprehensible as a picture, new details might be added). And then me or a mod will give the cue to start a new one.
I'll start.