Hi Mel,
When an order goes thru you will find a “MyStyle” section in each order’s details in your normal wordpress admin > woocommerce orders.
If you want to pull a print file for any design without orders, you can use the free MyStyle Design Manager add on. That will list all of your designs, with the links to the different images and the public page for the design, as shown here:
You can get the MyStyle Design Manager add-on for WP/WC in our marketplace, here: