I probably would not use that art the way you are thinking. But best to show the whole room and that particular wall straight on for good advice.

IMO not with those chairs but we have no context , I mean we need to see the whole space . Do you own the diptych or just thinking? BTW you need a much larger lamp and IMO a larger table also

I assume these are ”for sale”. I would pass on them, not in your room anyway.

Yes, you can put the art over matching chairs. And I think it could be interesting.

OK, I’m moving away from the diptych. What suggestions do you have for above these chairs and the corner adjacent?

Yes, I need a larger table and a different lamp, but can’t do those things until I make a decision about the space above

I would get the lamp & table first & go from there …. your sense of what’s needed or looks good might change drastically.

The art(s) size and placement should come last. The table and lamp should suit your room and be proportionate to the chairs’ size.

Your table is ok height wise, but needs to be wider to accommodate a larger lamp and accessories.

Hope this picture helps regarding balance.

Wait to address the corner. Hard to suggest without seeing the room, especially what’s on the other side of the fireplace.

Can you make suggestions on a table size and lamp? I’m getting overwhelmed.

Jackie it would be helpful if you posted more photos of the room from all angles. This helps us understand what overall finishes you have which then helps narrow down an accent table, lamp and art. No need to get overwhelmed just take it one step at a time

Without seeing the rest of your room, I just let Ai create the prints used, but you should get prints to your taste that also relate to the furnishings you already have. This is just to give you an idea of size and see how the table and lamp can relate to the print.
I’d look for a round table that has a height approximately 2” taller than chair arm height. And find a tall lamp that has a rounded shape - not skinny. Maybe around 27” or so. You can play around with that.
Then whatever you do above the chairs have something that will connect it to the fireplace decor.

Agree with the much larger & chunkier table lamp - think about the scale of the two flanking armchairs, you want a lamp that can stand up to those