Workshop Report Tom and Ginni Marsh Workshop - 16th - 18th March, 1984. The Workshop began on Friday evening with a slide show and discussion of Tom and Ginni's pottery, lifestyle and philosophy. Come Saturday, there are two wheels on stage, Tom and Ginni sit side by side, a couple of feet apart. The wheels spin slowly. Ginni starts with a series of 3/4 1b. Mugs y formed, paddles square, and re-rounded at the top: Tom, a series of tea bowls, thrown off the hump.