Well...it's a "moment in time". It's something you saw, something that YOU, yourself, thought looked cool. So, that's enough to click the shutter on. For me, as a non-participant at the wedding, it's not a really strong shot, but it DOES capture the men interacting, it has strong implied line of sight, and their placement against the painting and table is good, and the lighting is good too. On its own, it's not great, but it's not bad either. As part of a series, it'd be a nice detail. I think the two men are framed perhaps a bit too low overall, but the amount of space allotted to the painting sort of mitigates that, somewhat. WHat's nice about the painting is that the DARK grays make their lighter faces stand out in good contrast, and there are plenty of dark/light junctures in their clothes and bodies that make therm really "pop!" pretty well. The pointing with drink gesture of the man on the right really elevates this; if he would have been captured just standing there, this would not have made nearly as good a shot.