post some more pictures with different views... its not just a living room its your home! so far i would say, different curtains, something over the the sofa, a larger area rug. and instead of a hanging lamp go with a semi flush. and maybe more the hanging one over your dining table. i might take off some of the pillows too

I have a tiny apt. living room with ONE window. I hung 4 panels across it and bought an apt size sectional. See what I did on pic. Maybe u could get a moderately sized sectional too and still leave room for a love seat and chairs.