Liminal Moment by Bobblayers, each time laying the paper down on the heated plate. In the final stage she often paints back into the image with a oil paint and a brush. Japanese washi paper used for this process, then matt and frame them under glass.
Saw this on paper at Hahn Botanical- flowers, poppies especially good. Just plain while ceramic tiles, rubbing alcohol and special alcohol ink from any craft store. Would make an awesome new bathroom floor!