As you can see from the image here, your Sims can paint pictures of their own choice (Custom Pictures) and not just the ones Maxis supplied with your game. Full instructions on how to add them into your game is there too.

Custom Paintings/images included in this set are:

17 different I Heart pics

35 different Pokemon pics

1 Supergirl and 6 Superman pics

In seperate zip files which you can download, I Heart here, Pokemons here and Supers here.

I will add more when I have time to prepare them.
Enjoy 🙂