More pictures - not sure why they did not show up on the original post

Find some bright pictures to go between the window behind the credenza, and below the lights.

I agree with hayley! Here are a few ideas:

http://deciture.com/casa-medallion-tiles-set-of-4/

http://deciture.com/elberta-handpainted-wall-art-set-of-4/ (love these)

http://deciture.com/kincaid-bird-canvas-set-of-4/

Hope this helps you!

Really like the medallion tile Warner Decor.

Bright artwork, fabric accents, & things you love. I always keep a vase of fresh flowers on my desk.

Here is a picture of the table and chair swichted

The desk and filing cabinet seem rather dated and heavy for the space. I'd look for something in white to match the built ins, or just something with less heaviness.

And I agree with the idea of a painting with more color. It is pretty washed out over a similar paint color.

I liked the table under the window best, With the lamp on it makes a warm look in the window. the room is crying out for flowers or plants. Faux, dried either one, they also have some nice dried preserved plants out there that were alive. No care needed. A 3x5 or 4x6 rug with the console table and chair would be off the heavy traffic area and warm up the tile floors. A mirror or a large clock between the two windows behind the desk would give a finished look too. I like everything else. This is a real business office in the home. Keep it simple. K

Are the two person work spaces staying? If so, consider putting both together as shown in pic but perpendicular between the two windows (if window glare to computer screen is not a problem. Credenzas can go off desks to create long workspace. Alternatively each desk can face windows with credenzas along wall beneath art. One desk could go beneath window where small table is with credenza to rt wall, or desk could face out to room with credenza beneath window. Hold off on small table and chair until you get your workspace(s) determined then see where they work. You have a ton of options here, great light and space!

Painting the room in a different colour or wallpaper