Hello, I'm a small artist. Is it okay for me to make a small amount of merch and sell it at an artist alley?? If not I will absolutely not do it. I just love the game and sad it doesn't have any merch I can get. I'm sure others feel that as well haha!!
So long as the content is something you've drawn yourself, then yes you're free to make your own merch.
Quote from Nifast the Lead Artist : "as long as what's being sold are not actual official assets or material then yes".
If you do end up making merch send me a photo cause I'd love to see it lmao. Have fun.