Answer: Throughout Eschers career he mostly did self portraits by using
Techniques called woodcut, lithography, and mezzotint. Woodcut is making art my cutting and drawing on wood. Lithography involves drawing on a stone block and then printing from the stone. Mezzotints are created my etching amp image on a smooth copper tint and then printing from the smooth copper tint.
Step-by-step explanation:
Hope this helps :)