these were my fist set of stamp disigns.
first u would resive the four different types in a small booklet each stamp would all look the same saying "scratch this layer".
once the person has scrached away a message will apear behind . the message would be one of the facts above.
u scrach away to make an effort to see what it is so when you reed the message it stays with the person much longer .
also if i person usaly scraches away a surface on a card its usualy to se have they won something this will futher more incorage them to do so.