1. Start with this Golden Dot image.
2.Open a new image 21x21 cm 300 ppi. resolution, white BG.
Copy /paste the Golden Dot image 5 times into this white BG.
Now change 2 dots to a lighter color, and then change 2 dots to a darker color. Use the curves tool.
It should look like this. 5 Dots, each on it's own layer.
3.Fill the image with some more dots to look like this.
Flatten the layers to the BG.
Open a new image 42x42 cm, resolution 300 ppi, white BG.
Copy/paste the last image 4 times into each corner of this new BG image.
It should look like this.
Flatten the layers, and it's ready to send to your printer.