Also, 100% honesty time: I'm conflicted about this thread — technically the client is open-source and whatnot, but it's very much itch.io specific and I hate it when companies ask for free labor :(
So please, please only do it if you have like a half hour to kill & one of them really jumps at you. In theory I'd love to have them be actual commissions? If you'd like to do one "right" as a commission, send me your info + rate + sample work? Thanks!