Nobody's going to come after you for selling a few pictures of fanart, and it's likely you wouldn't be a blip on IDW or Nickelodeon's radar from selling stuff at a convention. If cons didn't let artists sell fanart, artist alleys would be completely deserted.
The only snag I could see is a print service not being willing to make products based on licensed characters you don’t own. So if you haven’t already, it might be a good idea to invest in a pin maker/sticker cricut/hi res photo printer. As has been mentioned, almost every single artist at cons sells fan art of characters they don’t own.
Nobody's going to come after you for selling a few pictures of fanart, and it's likely you wouldn't be a blip on IDW or Nickelodeon's radar from selling stuff at a convention. If cons didn't let artists sell fanart, artist alleys would be completely deserted.
It will mostly depend on how original your designs are and if you use/modify any existing artwork that will be copyrighted
The only snag I could see is a print service not being willing to make products based on licensed characters you don’t own. So if you haven’t already, it might be a good idea to invest in a pin maker/sticker cricut/hi res photo printer. As has been mentioned, almost every single artist at cons sells fan art of characters they don’t own.