Rainfurrest has this sketchbook they want the GOHs to draw things in. I found about this on like the last day of the con; it ended up sitting in my bag for a half a year before I took it out and started doing a piece I intended to do in marker. But then I realized I hate doing physical media. And then my mother died and things like this went way down the list of priorities.
Now it is the week before the con, and they want it back so they can give it to this year's GOH. So I said "fuck it" and took my rough into Illustrator, did a couple reference selfies for the character, and knocked it out in a couple of hours because that's easier for me than faffing around with real media. Then I printed it out and glued it into the book.
I am sure all the subsequent GOHs will hate me for raising the bar like this.
Sketches and other process info on my blog.