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 for the Nature Lovers
There are 98 various nature images in Set 4 to choose from in the 5.64mb zip file which you can Download Here!

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

Enjoy. 🙂