Marvin was bestowed with tremendous artistic talent. By 1989, pottery was Marvin’s medium of choice and also his only form of income. He was initially drawn to the pueblo-style carved pottery with gloss and matte black finishes, famously known in the Southwest as “Black-on-Black” pottery. Initially successful with the traditional Black-on-Black style, Marvin’s pursuit of his own style slowly began to evolve. In the mid 1990's he developed a two-tone technique by adding a layer of a colored clay slip and then carving exceptional detailed designs through the slip to the base color of the pot. It involved multiple firings and yet even more labor was necessary in each pot. As Marvin’s techniques evolved, more layers of color were added and the designs have become more intricate.