Zabel's Return by Vardiges Sureniants
It's a nice painting, right? Queen Isabela of Armenia is returning to the throne. But wait a minute, what is that guy on the far left looking at? It really looks like he's staring with a shocked look on his face at something over her head. It must be that he's supposed to be looking at the crown, but not to disparage mister Sureniants at all, it really looks like he's looking above the crown to me. is somebody waving at him? did he spy an assassin? What's going on?
The only conclusion I've come up with is that there's actually supposed to be cthulhoid tentacles reaching from behind the curtains, and the guy on the left is the only one who made his initiative/surprise roll. So, I've fixed the painting: