Draw very rough drawing for a partition of a flat in Sheffield

Hi
I have a flat in sheffield that has a mezzanine floor which on one side is over the kitchen/living area and on another side it overlooks into the master bedroom.
Which means the ceiling of the master bedroom is essentially open onto the mezzanine floor and the kitchen/living are.
From the edge of the balcony of the mezzanine the section which overlooks onto the master bedroom I want to put stud walls all the way up to the ceiling of the mzannine to essentially block the master bedroom off at the top from the rest of the flat.
I just need very simple drawing showing this.
would you be able to help?
Kind Regards
Sepand