Razor. Illuminated black photo paper. All colors are under a black layer of paper. I cut the specially processed photo paper levels with a razor, and when the desired color was obtained, I begin to create a picture.
Pictures should be in normal conditions in a dry place! Protect from humidity, dampness from sunshine and keep under glass! Do not wipe! Under normal conditions, durability is provided and longer than that of photographs, since all chemistry is cut off during operation! The picture with the year and retains its appearance!