1) Proficiency 2) Technique 
The characteristic way each artist brushes paint onto a support.
The characteristic way each artist brushes paint onto a support..
[n] - an artist`s distinctive technique of applying paint with a brush
noun an artist`s distinctive technique of applying paint with a brush
the use of a brush as a tool, as in painting. · the surface quality of a painting produced by the distribution of pigment with a brush. · work for which a brush is used, as painting.