Hello.
The website I’m working on is based on prints. The problem is as follows… Let’s say I have 500 images ready for print. I have 3 brands - Apple, Samsung, Xiaomi. This means that if I want 3 different mockups, I have to upload 1500 images/mockups, of which more than 50% are duplicate print images (1 design on 3 brands x 500 images). I know there are applications like Printify, but the point is that I arrange the images and print them by myself and then send them to the customer.
Is there a way to handle this situation? Is there an application on the POD system but that allows me to do my job more efficient?
Sorry for my english 
Thanks!