How to make an imitation of an old brick on the wall - step by step

Hello. This is my first film. Show him how to make an imitation of an old brick on the wall. We will need to do this:
-gips starter (I used gypsum firm "satyn"
-shapel / trowel
-mash
-sheet-tooth (used steel tape for various types of fixings)
-the level (I used 2m in the film PRO level)
Gypsum test
-Worker with stirrer
-chromometer (I used the protractor 25 cm.)
-a bucket of water
- brushes