I would go in a more "fresh" direction. It seems to me a bit heavy. The wall art you showed could be a bit more friendly - what do you think about the attached one?

or this...

Maybe suits better to your colors...

You may as well have a look here in this etsy shop - there you probably find sthg...

Excuse my English.

Best regards

Dominic

The ceiling is not so high, so I would go higher and wider with curtains.

Some inspiration is here

The ceiling is not so high

So you decided, per another post, to change the window treatments. Change out those pillows, too.

Very happy that you are changing the art. You new choices are quite different.

Why do you choose a tryptech? Three is too large for the sofa back; just do 1, sized to sofa back.

You have the deep red chair in the scheme, so you need to incorporate it.

How to hung curtains check Rebecca's idea.

https://www.amazon.com/gp/product/B07HZNZPHH/ref=ppx_yo_dt_b_asin_title_o03_s00