Cut your paper shape out of 80 gram paper, I work out a whole sheet in Illustrator as vectors so they can be sized up or down as required.
Coat the leather hard tile with the base slip, in this case dark green, you need a couple of coats.
When the slip is still wet apply the paper shapes and paint the same base colour over them to fix. Leave to dry off a little.
Then coat with the top colour of slip, in this case white. Apply several coats until you can barely see the papers.
Leave to dry slightly, when the surface is touchable you can take a pin to the paper and hook it off carefully. If this stage is done too late the paper will not lift off cleanly and leave a ragged edge.
Dry tiles under a heavy weight between thick canvas and paper to stop warping.