do absolutely nothing, at most just sign the pages outside the panels.
the less you do the better since
A) if they pirate it they wouldn't buy it at the start anyway
B) those who like it might buy it themselves later since they would be happy to support a good product after enjoying it.
if you try to police who gets what you will lose the B) pirates who you want to convert into clients.
pirates are either free entertainment seekers(they never buy anything) or cheap (they only buy after making sure they like it)
source: I lived in pirate heaven since childhood, most bought the product after knowing they enjoyed it or liked the author.
not strictly true, I've bought a lot of games, comics, and movies I've pirated since I enjoyed them immensely. Pirates are just dissatisfied clients with 0 morals or with 0 funds to spend (I'm in the latter), you have to actually make them happy to pay you for your product, how do you do that? make a good product.
but as always this is just my opinon take it with a grain of salt-