I can't see the pic (FB is blocked at work). The Dragoncon Art Show is huge. It has chain maille, steampunk, furry, dragons, fairies, witches, scifi, and everything from Japanese themed art to horror stuff. (OK, sometimes those are the same)
They like to have some sort of fantasy/horror/scifi theme to the art, but not all of it has to be thus. For instance, I have, say, 30 pieces on my panel, all beaded necklaces, bracelets, earrings. The pieces I name, 'Druid necklace' or 'mermaid bracelet', sometimes based on the subject, but often just the color scheme. A bracelet with a raven might be Odinn's Bangle. Some artists just name things 'bracelet 1, bracelet 2'. I like to be more creative.
The art show has a student section, and has some heavy hitters in the high end. Boris Vallejo, Michael Whelan, Dan Dos Santos, Janny Wurtz, Don Maitz, Todd Lockwood - all of these have been guests of honor (I've met them!) at times. Janny Wurtz and Don Maitz are there every year. Other artists that frequently show (so you can get an idea of what's in the show) are Paul Vicenti, Stan Morrison, Paul Bielaczyk, Heather Kreiter, Rob Carlos, Rachel Mayo, Theresa Mather, Jasmine Becket-Griffith, Stephanie Law, Chaz Kemp, Mike Bocianowski, Sarah Clemens, Mark Helwig, Joseph Corsentino, Jessica Cox, Meredith Dillman, Kevin Dyer, etc.
2D art is prime, but there are plenty of jewelry artists, 3D artists, and some that defy categorization. There's a separate Comic Book Art Show next door (there's a passage between them).