It would help to see more of the space, but it looks like the picture should be larger and lower, and the cabinet should be taller and narrower.

OK, your cabinet is fine and the art object is beautiful, but needs to be placed off center. The art work should be at least 40-48 W X 36-48 H ,

Add new curtains in a softer pattern or solid color , that will go to floor

The white walls are off-putting and need to be warmed up, maybe a neutral like SW Kilim Beige

contact me if you need more help