Yeah no problem! I understand there are some holes, that’s why it’s a theory ;) The size thing is weird, but this could just be something the artists used so we can see it on the side of the desk. Sometimes how things are drawn are not always consistent (ie young stans chin??). Someone else pointed out that it is blue and doesn’t look like a burn, which is true, but I’m coming at it from the angle that it’s magic, not actual fire, so who knows what kind of mark it would leave. Someone else pointed out the color could be the way the artists show scarring overtime. I would also like to point out the blue/red dichotomy throughout the show (ie bills blue flames and his red symbols) so maybe it’s going along with that. Also just to nip this in the bud, someone said he had a jacket and couldn’t be burned, but if the marking is magical I don’t think I little bit of cotton would be able to stop it.