Points:
My problem of presenting the design was limit for number of renders
So I tried to show two part of design which was hard to understand with plan in render
First one:
Place of bed in bedroom; with designing a special place for bed in your bedroom you can divide the room simply. Place of this design is match with lines on ceiling. As an advice you can hang curtains on highest line of ceiling. It will be a special part of your room in addition to dividing the room to 4 part.
(There is 2 first floor plan for your future design)
Second one:
In the living room you wanted to have comfy and bright place so I decided to divide your house in a different way. If you use the wall in that way; you will have kitchen and dining room in separated place with sunshine.