Here is a step-by-step description of the process:

1. Start with a basket of potatoes. 
2. Choose potato.
3. Slice with pastry slicer or large flat knife on cutting board.

4. Carve desired shape with jackknife or small kitchen knife. 

5. Use cardboard palette for stamping pad. Smoothly spread paint to consistency of mustard or ketchup with 1" brush. 
6. The potato becomes a stamp. The cardboard the stamping pad.

7. Print design. It is fun to repeat the design and embellish with details!