One possibility would be to swap the living room and the dining room. Since the current living room is larger than the current dining room you could still keep some comfortable seating (couch and upholstered chairs?) against the front wall for a keeping room/dining concept. Then your new dining areas (kitchen and dining room) and living areas (living and drawing room) would have good flow between them, which would work well both for family and entertaining. You could also add some builtin bookshelves in the drawing room or new living room to create a library area to add another fun element to the living areas. These bookshelves could be against the long walls in the drawing room, around the window with a window seat in the living room (former dining room), or built to create some separation in the open area between the drawing room and living room/stair area. Your plan seems to show some sort of builtin there, but I'm not sure what it is.

You should have a minimum of 18" between countertop and the bottom of the upper cabinets to allow for appliances as well as enough clearance for food prep. Base cabinets will end up with a height around 36"ht with the countertop. Bar height is usually around 42". Upper cabinets can be 30" in height or taller depending on your ceiling height and whether or not you are taking them up to a ceiling or soffit. Make sure to adjust for crown moulding on the cabinets or wall.

How do I make a small space look bigger ?? mirrors to add is one option ? can you suggest more options pls How can we make a small space look bigger ? 1. same colour pastel colors 2. some addition of reflection or mirrors 3.Having small frames on wall or minium on wall. 4.Having oine wall painted / with wallpaper draker than others what are other option pls suggest for my place ?

I agree with divadeva. More lights. If you can add pot lights do it. If they're already there add task lighting and up the wattage on the bulbs on the pot lights (replace with LED and you can make them brighter because the wattage on LED is lower for brighter light). If you have all of that add decorative lighting. If ventilation is an issue find a way to move the air around or add air filtration. Maybe the HVAC is deficient. Maybe you can add a HEPA filter instead of the standard one that comes with the unit. Call an HVAC specialist to see if there is a way to boost air flow in the room.