Your Stamping Notebook: page 2 of 14

Here is CTMH video showcasing basic Generational stamping.
It says "WINK" in the picture beside the double stamped image because if you close one eye, it is easier to line up the images to stamp it a second time over the first image.
The centre image is stamped once.
The lower right image is stamped a second time from the same inking.  Some people on the internet call that "ghost" stamping.  This is how you can triple, even quadruple your colour palette, especially with darker inks.