FIne Motor : Pasting dough in Leaf

I've got this printable from Child Care Land site. They provides so many free printable for preschoolers. I printed this leaf dough sheet to practice Fritz's fine motor skill. He had to make a ball from dough then he must to put it on the circle inside the leaf. So far, he's good in pasting the dough and he completed it without any grumpy. However, he still needs more practice in making the ball.