And some kind of "hook" helps.
"Filmmaker Amir Bar-Lev spent almost a year filming media phenomenon Marla Olmstead for his documentary My Kid Could Paint That. The story follows Marla, who became famous at age 4 for the large, colorful abstract paintings she may — or may not — have created."
You can read the full article here. Its not all that long.
I looked over her web site (link on the side of the article... you'll want your sound on) and watched two of the short videos showing her painting. This is opinion only, but I think someone else has touched up her paintings once she's done with them. I don't like liver, either.
There are so many excellent artists out there in the world, formally trained and untrained. I have and continue to scratch my head wondering why one person is 'successful' and others aren't. Marketing has got to have a place in there. That and the right vibrations, I suppose.