Give more information, e.g.: what do you like/dislike about the existing proposal? Which criteria must definitely be met? What can be repositioned arbitrarily and what cannot? etc.
And, why are you building an 8.5 sqm dressing room when you can barely fit a 2 m long wardrobe in there and otherwise have to somehow piece together about 2x0.8 and about 1x1.3.
The staircase also looks heavily overbuilt, resulting in the following effect:
Then I read something about a knee wall window on the right side of the plan... how high is the knee wall and where is the 2 m line?