Shirt by Hand (shirtbyhand.nl) displays the "next" button for every component, guiding the customer back and forth through the components. No need to actively select an option. Notice how the initially chosen preset (fabric) is always accessible within a drop-down in the right upper corner. Rather than making customers go all the way to switch to another preset, you could keep them accessible at all times. Downside: unfortunately, the option isn't available on narrow screens.