I'm a bit late, but am gonna do the hands challenge all the same when I have time. Maybe the famous person as well, but then again; in my latest batch of sketches there's already, what, ten sketches of Cillian Murphy? I may have already gone a little overboard on that part of the challenge :')
It might be a good idea with our bi-monthly challenges to give two options instead of one. That way if someone is way uncomfortable with one they may choose the other. So this could be "famous person" and/or "washing hands". Just an idea.