Help me make it “complete”

Hello, Hereby some pictures of our living room. I dont have a big eye on decoration, cannot say i have good taste, i know what i like when i see it somewhere else but not good at creating it at my own place. We have a long&narrow living room. Thinking of what kind of rug(s) i need to complete the place. Want to include more plants but not sure where i could put them. Want to add an art piece above the piano. And also want to add a big statement painting at the big empty wall next to the kitchen door. Any ideas to make this is an inviting living room is appreciated.