Please post photo for best response.

Yes - post images - include various angles of the room so we can see your furnishings, carpet, draperies, etc. All those things will influence responses...

It will take a bit of math, but you want the correct size for the wall.

If you’re choosing wall art for a predominantly empty wall, your wall art should take up about 60% to 75% of the available empty wall space (the portion not covered by moldings or furniture). The first step is to measure the height and width of the wall. Next, multiply the measurements by both 0.6 and 0.75. As a result, you will get the best range of canvas print sizes to suit your unique space.

if your blank wall is 9 feet tall and 5 feet wide, multiply 9 by 0.6 to get the low end of the ideal height range. Then, multiply 9 by 0.75 to get the high end of the ideal height range. Do the same for your wall's 5 feet width. The ideal height of the canvas would be 5.4 - 6.75 and the ideal width would be 3 feet - 3.75 feet.

Dove Wing loves green...so a properly sized landscape would work.

One may look a bit lonely but if you add a battery powered picture light over it...maybe a floating shelf under it (wider than the art), I think it would work well.

Working in the dark here so post pics in a comment DO NOT start another post .

Look around your house. What has life already given you that would be amazing to display on that wall? Family pictures? Kids' drawings? Kimono from a foreign vacation? Gorgeous vase on a wall shelf? Family heirlooms? Don't just buy some lame artwork to fill up space.