Great that you are doing Antoinette's e-course! You will learn to make your own tools out of almost everything (beer cans among others). For the pinch pots, cut a beer can in shapes you need for the pinched pot. Bigger ones, smaller ones, every shape you need.
I like the pinch pot that you made in the course! And also, like other members, I like the uneven rim. It's very personal.