I shaped the individual balls by gathering the rough bits of the dough to one spot (which became the bottom of the ball) and rolling the opposite side in my hand. This made smoother, shinier rolls than just rolling the dough balls like a ball of clay.
I doubled turmeric and cumin and used 3 potatoes. Next time I think I would like to add 1/4 cup water with the lime juice at the end before stirring it up. I think it would just create a layer of flavorful lime mashed potato to coat everything everything