As I see that it has not completely disliked I have done some more tests.
I have played with cylinders but it has not convinced me Alberto. I leave a link in case anyone is interested in testing my work files.
I consider this image to be the best I have ever achieved.
The profile has:
The smooth and homogeneous tone.
A simple base mesh until subdivided.
A plane with a slope to see the relief with a little perspective.
Two elements to display Topology Auto-masking.
A face set to show Face Sets Auto-masking (false because Blender crashed).
Concavities and convexities to show flattening and smoothing brushes.
A central slot to show when the mesh swells.
Three horizontal lines to show the brushes that concentrate, relax or move the mesh.
The brushstroke is very concentrated at the beginning and less at the end so that it always shows something at different pressures.
https://drive.google.com/open?id=1wJ_m2uuzak5ETVU8wTZAZxq1lBsGX6wN