These blues are not turquoise although they appear that way in this light. You can choose a print for your windows that ties all your elements together. She has both light wood tones and darker tones, which this fabric connects both.
Hello inexpensive Target pillow which works with all the print options.
This fabric has hues from the "tired" sofa, which is really very nice, mixed tones of browns and brings in the blue that will go on the walls. I think that Target pillow would be great with this window panel.
Stripes give height to a room. With this open floor plan, a stripe gives more depth and height to a room if placed in the right space above the window frame. Again the blues are picked up and the wood tones brought in.