You will need to talk to an architect or perhaps a glazing vendor who specializes in curtain systems. They will likely provide the shop drawings necessary. Curtain systems are not something I'd attempt without help if you aren't an architect. There are too many variables, too many different ways to go, lots of options (storefront, spider, etc).

You can try shades of teal & white in maybe floral,Paisley or a pattern that you want to try in incorporating with the theme of the room. Since your furniture is brown ,please try fabrics with white,teal and shades of brown as well...Go for a cotton/ raw silk fabric rather than heavy material drapes.Keep it floral and summery.Teal is associated with summer and ocean.Thanks.

Hi Mr. Suraj, You need to hire an interior designer for getting the interior design of your whole flat. Please feel free to contact me on 7838154046 or write to me at pkassociates8@gmail.com. I can provide you interior design of your whole flat in your budget.

Theja , You may not need any treatment here. After your curtains come in there will be hardly any wall left. Instead you can do a panelling on the opening on the wall between red and yellow spaces. Thanks, Nitin Cornerstone Designs, Bangalore