You have a nice geometric, somewhat masculine look going here. I would play that up. I don't think you need to change the wall or carpet color as they seem to be a nice neutral background. Are they cream? is the purple more plum? and is the blue more of a steel blue/gray? The furniture is chocolate brown? I love the striped pillow on the chair. I would layer a wool steel blue/gray area rug and then play up the blue/plum in the pillows. A wool plaid or blue gray herringbone in a couple of throw pillows (replace a few of the solid color pillows) could help to pull it all together. Kind of like the colors in the picture of this bag. Adding brown leather cording would be a great compliment on the pillows. (Not sure the area rug in front of the TV is adding anything)

With these strong basics I'd like to see something a bit unexpected, like plain aubergine. Add a super piece of industrial art and a few more cushions, including another print one. (Didn't know whether you meant carpet or rug, but as I was going plain I picked a carpet, which can always be bound into a suitably sized rug.) http://www.qualityflooring4less.com/patcraft-color-choice.html http://www.artflakes.com/en/products/industrial-revolution http://www.hm.com/us/products/home

There is so much you can do with the rug. You can go with a modern feel by bringing in metals, glass and creams with pops of orange or greens. You can go mid century modern by emphasizing the orange or even traditional with woods and beiges with hints of colors. If this was my starting point for a room that just needs to be cozy and comfortable, I would do a statement bed with darker wood. I would keep the curtains very light, and also the bedding. As there is creams in the carpet, I would steer clear of white, but use off white / beige for the bedding and curtains. Then I would use the orange and greens as accents in the room. Good luck and enjoy the process.

Its just really messy right now. Too many colours and clashing prints. Is that Puja unit lime green? Or does it just appear that way because of lighting? Either way, it stands out like one more distraction. Pick one base colour add and add prints that go with that base. That TV unit HAS to go. So do that black metal coffee table and the carpet. I would suggest you go with a simple geometric print in the carpet. But apart from these obvious design gaffes, the structure has distinct possibilities, if you do a classic English style. The railing above adds some interest