More pictures of the room would be helpful. First thought is a piece of art over the mantle and maybe a fiber arts piece over the chair, like macrame? Something almost as wide as the chair.

https://www.amazon.com/Flber-Macrame-Hanging-Large-Scale-Tapestry/dp/B0BYDM6888?source=ps-sl-shoppingads-lpcontext&ref_=fplfs&smid=A1EPOB20MKBS2S&th=1

https://www.amazon.com/Weldomcor-Tapestry-Handmade-Bohemian-Decoration/dp/B0CJV6PP1V?source=ps-sl-shoppingads-lpcontext&ref_=fplfs&psc=1&smid=A3BCJ0M407C5KL

Large original artworks are an excellent addition that gives character to any space. Good luck and enjoy the decor!

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I need to see the whole room please Post the pics hee in a comment DO NOT start another post.Yes to art and no to fake trees for sure.

It looks like, besides art, that side of the room could use a floor lamp or a side table with a lamp. That will help make it look more cozy.

As a general rule of thumb, bigger pieces of art look better than small and art on walls should be hung at eye level.

Post more pics so we get a better idea of what will work for the whole room.

I’d change the light fixture and add family photos or art

Inspiration

What other colors are in the space? Can you add more images of the room?

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Maybe try a piece of artwork over the mantle and perhaps a 3D piece of artwork over the chair. Below are a few images to aid you more with your dilemma.

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