I'm trying is to make is a design from four cupcakes that overlap and are seamless just like a seamless gravel pattern basically.
I've added a picture below to show what I want to create.
Now you may ask: Why do you want to make something you already got and still have access to?
Well, the pattern is made by the Printify editor and, as it turned out, Printify does only have one fabricator for this object which is in the USA. I want to sell my object in my home country I got to pay about 25% import tax. So therefore I would like to know how I can make this exact or even better pattern myself so I can use it on an EU PoD site.
What I tried to do is download it from them, but there is no button for that nor can I screenshot or download it from F12 dev tools as the slipper outlines will be in it. One solution I've got is to screenshot it and edit out all outlines but that will take a while and will be my last resource. All PoD sites I've seen have a very basic designer which lets you do nothing good so I've to import my own pattern to that site in order to get my US and EU customers the same designs.
I don't own any editors for images besides GIMP or Paint.
How can I make such a pattern?