Although the dates are not strictly documented, it is believed that Leonardo da Vinci worked on painting the Mona Lisa for years. We can do better than that, now that we have computer paint programs! And like anything else, we can make a competition out of it. Matt Round brings us the game Clone-a Lisa, in which you have 60 seconds to recreate Da Vinci's Renaissance portrait. When your time is up, you will be given an automatically-generated percentage score. Apparently filling the frame with color goes a long way. Those who painted the background first tend to score higher than those who drew a face and then ran out of time (like me). I should have read the Mastodon thread on how the game was created. That might have given me a heads up before I dived in. Members of Metafilter were kind enough to share their attempts.
Mine, with a very low score somewhere in the 20% range, is at the bottom right. I lost track of time. Sixty seconds goes by fast! I'm sure I can improve upon that if I tried it more than once. You will do better.