While design, you still can switch to other product for current apply design to a new product or create a new blank design.
Lumise supply method to change to other product with some click.
#1, go to Product tab, then click on the Change Product button bellow product title. The new popup display with a list of products available for design.
#2 In the popup list product, select one of product you want to order. Then click on that product, a confirm message to show on with two selection: 1. Switch product with current design, 2. Switch to the new product with the new blank design.
#3 The new product info updated into the editor. You can see the printing methods, attribute updated as well.
Now you can continue to work on a product.