Iron Man actually wasn't too interested in the process, and he preferred to drop his marble in order to splatter paint, then roll it around with the spoon. Whatever works.
After he finished, he asked if he could paint another page. He painted the entire page solid red.
I decided we would combine the two paintings into one piece of art. After his paintings dried, we flipped over the marble painting, filled the back with tracings of a candy cane shape, then cut them out. Also, because of the amount of paint he used on the solid red paper, it was curling around the edges, so I glued it to a scrap piece of cardboard.
I was then going to have him glue the candy canes on to the solid red painting, but he had something else in mind. He asked if he could put red glitter on them. Now, I will be honest. I hate glitter. I looked at his cute little candy canes and thought they looked just fine. After looking at the final product, I still think I would have liked it better without the glitter. However, it was his project, and what I wanted didn't matter, so he got his glitter.
The finished product!