New to this for sure without stating the obvious when I looked at them the things I noticed were starting with Sally Ride from his chin to his nose there are deep lines that are smooth to the touch and around his mouth there is the " cold sore" there is a line that shoots out from the tip of his nose to the edge of the quarter.
On Sally where the earth is there are two lines as well that are smooth to the touch. And her face has the gouges as well.
Then on Wilma Mankiller I see on the die chip( I am really studying the terminology so please bear with me) around the mouth "cold sore" then on Wilma on her shoulder is what I thought may be a die crack there and above the M . It's above her eye as well.