Hello Planetnine,
I received your PM.
But I would like to answer it in the thread, so that other people can benefit from it as well.
A way to make a texture seamless:
I just started google and typed in:
"Make seamless texture"
You will get many hits and tutorials how to do it.
This one is maybe suitable for you, because you said, that you have photoshop:
click
Hope this could help a bit.
Kind regards,
Seven