You can still make orders if you don't have an eShop, you can place them manually, which is pretty simple.
The steps are pretty similar to placing an order that comes from an eShop:
First you must go to Print Files on your main dashboard and upload the art you wish to print (you don't have to do this every time you want to place an order, files are saved into your account). Remember to follow the basic requirements when uploading these files.
From your main dashboard go to Orders and click on "New Order"
Choose the file(s)/product(s) you wish to order.
Fill the rest of the form with the customer's information, address and phone number.
Choose a shipping option.
After you made sure everything is correct, click on "Send to Production" and you're all set.
When the order ships we'll provide a tracking number for you to follow.