Hi sagar goyal, can yyou tell us that for which purpse you are using this room it looks like a drawing or sitting room from your design. Dear here i am attaching some pictures which you can see and have an idea that gracefully you have quite large space and you can make a great drawing or sitting room by just putting colors,paintings,and other things on it.First make your room white because white has a best quality that every color will match and looking so cool on them.Put colorful sofa covers and curtains in your room.With colorful racks as shown in a picture,you can also add greenry according to given picture a wall hanging which you can put on one side of your back side wall and if you want some space to put your things in it so you can use cabinet which i given to you in my first attacment of pics.both wodden work on back side and both color full wall hangings for decoration keep it on your both side walls it gives you matching and very balanced interior also you can put wooden floor to make it more appropriate.or else you can use my two last pictures as keep your interior more balanced. I hope you can get more and more ideas and you will have a great room .Good luck .

You have a great floor plan with furniture placement ideas which will help when you are purchasing your furniture and decor items. The next step is to use houzz.com to put together idea books of images that you like for each room. Then you should find a local interior designer who will take those images and work with you to help you shop for everything and to select colors, etc......... Make sure that you find someone who is highly recommended and who you are comfortable with. Also, call their references and make sure that their past clients loved working with them and that they worked well with their budgets as well ......

If you are just looking for a professional try Find A Pro tab on top. I'm on there as well and would be happy to help

You can work with your currant wall color or go more yellow - that is up to you. If you do decide to go more yellow. get some small inexpensive sample bottles at the paint store, paint some poster board and hang it on a wall for couple of days because getting the right buttery yellow can be hard. A soft yellow and lavender is pretty together but I also like the sea green. When you said a combo of modern and cottage - that made me think of beach cottages, which often have soft colors (including sea green) and unfussy, calm interiors. You can put a large painting up if you have the wall space for it. Many bedrooms have tall chest, dresser mirror, tall headboard and big TV, all which take up wall space. If you can hang the painting without it being crowded by any of the things I mentioned, it should look very nice. If you wish to do a curtain fabric treatment to a wall and you have the vision of what you want - then go for it. I had a friend who did that in collage - only problem was the yards and yards of fabric needed got rather expensive. So, I would start with finding bedding you love. Simple white is good, and not too expensive. However, you might find something else light that you love, or a quilt or throw for the bottom of the bed and the colors and shades might lead you in a different direction for wall color or accents. So bedding first, then curtains, then see how your wall color is and then add accents and art - although your painting can also be an inspiration for colors.