Hello! If you have about 7' of continuous wall space, you could centre a small desk on the wall, then flank it with Ikea Kallax storage shelves. Use their Drona tote bins to corral messy stuff, and leave other cubbies open for the backpack, books, etc. Showing below the 48" wide Josephine desk from World Market - the front drawer can also flip open to come a keyboard shelf. Also comes in other colors. Also, the smallest Kallax shelf in their series (16 1/2" wide). Another possibility, depending on how the room is configured, is to butt the desk up to the foot of the bed. This should allow about 2' of chair space in front of the desk. You then might be able to use a larger Kallax shelving unit. They come in some great colors in the larger sizes - turquoise, pink, etc.

For the living room, the focus should be the balcony area. So flipping the couch to face the wall and not the dining table will help. Kind of like this pic. Even if you already have the sectional that is in the diagram, you should be able to flip it. In fact a sectional would probably work better than the couch in this pic. I also really don't like the style of this pic, but it showed what I meant, For the girls' room: No matter which bedroom you choose, you should maximize floor space so that they have the biggest play space possible in their room (as they get older you can add desks for school work and such). To get this space, I would give them bunk beds. This configuration gives them an open feel and more storage, essential for girls. You posted two different kitchen designs. This makes it hard to give you advice. I agree with other posts that your sink should be away from the wall. This allows you to have stuff to the left of you (drying dishes in my house), while you wash vegetables on the right of the sink. You need the same space on both sides of the stove, also. At least 24 inches on both sides is good. 36 is better, though. The first design has a nice little countertop space that adds a place for your daughters a space to sit a watch/ talk to you while you're in the kitchen. When they added this to the first design, you lost cabinets on the other wall. This is bad, as the space is already storage limited. Try making the rounded countertop bump out into the living space more. If you play with the shape, you could make it work without losing the cabinets on the other side. It doesn't have to be rectangular or a perfect circle. You can see how this one isn't confined to the floor plan of the kitchen. I think this is what you would need to do to make it the most functional.

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 ?

Hello Komal, You may need to share the floor plan. If you want to do it by your self. Search for images that give you an idea of what you like. Call for proposals from known designers who can suggest plans and their costs for it and then decide accordingly. Thanks, Nitin CORNERSTONE DESIGNS, Bangalore.