The motion of a potter involves a series of coordinated movements and actions as they shape clay into pottery. It requires skill, precision, and a deep understanding of the material being worked with. Here is a step-by-step description of the motion of a potter:

1. Preparing the clay: The potter starts by preparing the clay, which usually comes in a lump or block. They knead the clay to remove any air bubbles and ensure it is soft and pliable for shaping.

2. Centering the clay: The potter places the clay on a spinning wheel called a pottery wheel. They use their hands to center the clay, which means aligning it perfectly in the middle of the wheelhead. This is crucial for maintaining balance while shaping.

3. Opening the form: Once the clay is centered, the potter uses their hands to create an opening in the center of the clay. They gently press their thumbs or fingers into the clay, gradually widening the hole while maintaining an even thickness.

4. Shaping the walls: With the initial opening created, the potter starts shaping the walls of the pottery. They use their hands and various tools, such as wooden ribs or metal shaping tools, to push and pull the clay, gradually raising the walls and creating the desired shape.

5. Smoothing and refining: As the potter continues to shape the pottery, they pay close attention to the smoothness and evenness of the walls. They use their hands and tools to refine the shape, removing any imperfections or excess clay.

6. Trimming and finishing: Once the potter is satisfied with the shape, they may trim excess clay from the bottom of the pottery to create a neat foot or base. They use a sharp tool called a trimming tool or a wire to carefully remove the excess clay, creating a clean and even edge.

7. Drying and firing: After the potter completes the shaping and finishing, the pottery needs to dry before it can be fired. The drying time can vary depending on the size and thickness of the pottery. Once dry, the pottery is fired in a kiln at high temperatures to harden it and make it durable.

Throughout the entire motion, the potter's hands are constantly in contact with the clay, feeling its texture and responding to its movement. They have a deep understanding of the clay's behavior and adjust their movements accordingly to create beautiful and functional pottery.