That's great! :) The CC0 license would help to make that clear.
Do the two free spritesheets have a license? Could they be given a Creative Commons license?
Possibly maybe making a Twine game called Crypt of the Neck Romancer, where you try to survive romantic encounters with various undead fiends while looking for Dracula so that <randomised Dracula pronouns> can suck your blood.
