I am a licensed fan artist for Cartoon Network’s Adventure Time. I made this fanart as a part of Redbubble Partner Program. It is still under review though, which can take up to a couple of months or more. If approved, I can sell this merch on Redbubble legally.
Here’s a time-lapse video of me working on this drawing.
Of course the design I submitted to Redbubble is a digital version of this drawing. I am a noob when it comes to digital art and that explains my 2-dimensional design. You can see more of my licensed Adventure Time work here: Adventure Time merch