When you get to the art center, you see what art they have on the in and outside of the building. Now all you need to do is, just make the main room the art room.
Take what art they have, and add a li more. Then put thoses white lil white under neath. Thoses lights like yard light, but they are the smaller white kind. Then have a party. Then artie or charity will say thanks for throwing a cool art party or something close to that. Then it's completed.
It took me a while, but I finally got there. Just watch out for what Artie, says, he will hint to you once in a while about what to do.