This is sick! Even if it wasn't on a skateboard, it would be super awesome!
You might be able to scan the the flat bits of the board, but any photographer with half a clue will be about to do a flatlay of this and correct for the distortion caused by the curves at the board either end to enable use of the artwork for other merch.
Thank you! Believe it or not, the skateboard decks are really popular in the horror community for whatever reason. Also, if you look online and are willing to buy in bulk, you can get them for even cheaper than what you'd spend on canvas. I also do handbags, leather jackets and shoes.
Don't see a lot of this stuff locally, but I am probably looking in the wrong places, or not going to the right ones. There's so much talent out there!
I get why the skateboard decks are popular, my bro in law is a massive horror fan and has a few broken bones in his past from skateboarding. :D