I would remove the valences...see how you like the side panels only. If no, consider shutters, wooden blinds or sheers at the window. I do not see any lamps anywhere in the room. You need them; lighting is "decorating" as much as furniture or accessories. I would advise simple shaped lamps in ceramic. Your artwork looks faded; if everything looks "blue-ish" than the art work is definitely too old to hang. Have fun finding new artwork as you shop and travel. Put something on your brass table. My sister has empty bottle of a variety of liquors, wines and whiskeys. and glasses too.
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Old and new furnishings
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