How to make a window wall of GCL with a niche for the radiator

How to make a drywall (GCL) wall with a niche under the radiator near the window. In order to make the wall of plasterboard as close to the old wall, use only two types of profile 60*27 and 27*28, this we achieve a minimum of reducing the space in the room (take only 4 cm). You can use the profile 50*40 and 50*50 but then the minimum distance from the wall will be 6 cm.
At the end of the video I will show how easy it is to align the niche under the radiator with the profile, beacons and plaster.
Please note that the plastic Windows in the house are already installed, and the pipes under the radiator are already connected.
You may also be interested in the following videos :
The simplest method of leveling niches (30 min) and walls with plasterboard - • Простейший способ выра...
The second day of home repair. Where to start? How to remove the radiator? - • Второй день ремонта до...
Replacement and installation of window sills. One fun day at the office.- • Замена и установка под...
Plaster the walls of the house with the help of a plaster station and a bucket hopper. And also fun at work. - • Штукатурим стены в дом...