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By Elena Pollastri.
The single tiles in .png formats are in the download links below (the pictures in the posts are lossy jpg, don't download them).
The tiles are relatively small pictures 1200px and 1500px squares.
If you are a patreon and if you want to print them and you don't know how to tile them: just give me the size and the approximate number of repetitions (if the tiles need to be scaled too). I can give you a png in the desired size.
If you are not: you can tile them yourself (the license allows modifications).