I like the wall, too. I also agree with groveraxle that you just need to declutter and make the bed. It's hard to tell from the photos, but is the bed super low? If so, it would help to raise it. Look for bed lifts at your local bedding and housewares store. They are easy and inexpensive. Then embrace the rich colors of your walls in accessories like throw pillows. I would love chartreuse with it, too. But the main thing is the housekeeping. No matter how beautiful the decor, a bedroom always looks messy if the bed is unmade.

where are the wardrobes , desk and dresser right are placed right now. and what all you furniture you want to retain. do you have any budget to spend in mind ?

I suggest you paint your walls off white to cream .secondly have a large canvas painting on the wall above the headboard which has a medley of colours. It will act as a focal point and also tie together all the colours in the room.

1. Though you have small windows keep curtains hign all along the ceiling to floor and hide curtain rods in false ceiling 2. If you have these windows at angle then you may opt for Angular curtain covering both the windows in one go. It will look beautiful 3. Do wall paneling...nowadays there are many options like fibre laminates as well or if budget allows go for mdf n ducco paint