i would change the quilt for one white and put a blanket on feet of the bed in blue sky, pillows in white, coushin in blue sky and a touch in yellow, or not. These colors are in the Glicee JudyG designs, If you can, paint the wall on the top of the bed in blue sky, or install wall paper. Lamps at the side of the bed in white or blue. It would done relaxing the room. I send you photos with other ideas. Sorry for my english, i speak spanish :)

A 36 x 24" piece of art work would work perfectly above the bed hung landscape orientation. I would also find some smaller pieces to go on the side walls above both night stands. If you want to find reasonable priced nightstand, try Overstock.com.

As others have stated, you have a ways to go before you select a light. The walls need either a couple of paint colors or some wallpaper, you need a rug, some furniture, window treatments, etc. Then start thinking about a light and where it will be located. The ceiling is not very high, so the location and height of the fixture is an important consideration.

If you could exchange your dressing table with your dresser so you don't need as much space on the right which would allow your bed to be centered (I don't think it is?). You could then add 3 prints in an arch, centered around headboard. If I could suggest adjusting your bedding for a more layered look. You could turn back the comforter so the sheets are exposed, add more and lighter pillows and change the dark throw to something less bulky and lighter or even remove all together. It would be great if you could add a second bedside table (doesn't have to match) and add matching lamps on either side (taller than what you have). Save your money by not replacing bedframe and purchase accessories..the headboard is lovely and you'll have more impact by your $$ going towards finishing touches.