What if you want to draw with a artist friend of yours but you don't know what jam they are in? Next to their name icon where it tells you if they are in a jam, you should be able to click the paintbrush, and it will take you to the jam they are in. But only if it is a public jam,if not a pop-up will appear on the other person's screen, asking if they want you to join.

When someone you follow is in an artjam, there should be a Join feature!!