Tech • nique – the manner and ability with which an artist, writer, dancer, athlete, or the like employs the technical skills of a particular art or field of endeavor.
Classical guitar technique is how we move to accomplish our goals. In other words, technique is what we do to accomplish all of the musical things we want to accomplish. Thus, it’s extremely important to isolate your technical deficiencies and work on them. For classical guitarists, that means doing (1) arpeggios, (2) slurs, (3) guitar scales, (4) other left hand considerations and (5) other extended techniques such as rasgueado or things like a snare drum effect.