This is crazy! I just straight-up DREW all this tile and all the crazy little flowers and ornate borders using shapes and shapes cut out of other shapes and the blob brush. I have no idea why anyone would need a design like this, but go me!
Also the tiles obviously don't line up perfectly - there's a fair bit of math and careful calculation in Illustrator if you want things to come out perfectly straight. Good thing I found this out before completely letting go of the detail-oriented Shinah-person I created in my law firm job.